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  • دکتری (1389)

    مهندسی مکانیک

    کیوشو، ژاپن

  • کارشناسی‌ارشد (1384)

    مهندسی مواد - جوشکاری

    دانشگاه تهران، ایران

  • کارشناسی (1381)

    مهندسی مواد

    دانشگاه صنعتی امیرکبیر،

  • فرآیندهای تغییر شکل پلاستیک شدید و نانوبلوری شدن سطح
  • فرآیندهای ساخت افزایشی و پرینت سه بعدی فلز
  • شبیه سازی در مهندسی و علم مواد
  • خواص مکانیکی مواد پیشرفته
  • مکانیک شکست و رشد ترک خستگی
  • علم مواد محاسباتی
  • آنالیز تخریب و مکانیک شکست

    زمینه های پژوهشی:

    کارشناس مسئول:

    تلفن:

    مکان: تهران-جلال آل احمد-پل نصر-دانشگاه تربیت مدرس

دکتر رضا میرسمعیلی مدرک Ph.D را در سن 29 سالگی از دانشگاه کیوشو ژاپن دریافت کرد و دوره دو ساله پسادکتری را در مرکز تحقیقات بین المللی انرژی هیدروژن و دانشکده مهندسی مکانیک دانشگاه کیوشو گذراند. وی اکنون دانشیار دانشگاه تربیت مدرس می باشد و به عنوان رئیس بخش مهندسی مواد مشغول به کار است. وی حدود 50 مقاله در مجلات معتبر به چاپ رسانده و به عنوان کمیته علمی برخی از کنفرانس های بین المللی فعالیت داشته است. دکتر میراسمعیلی همچنین موسس شرکت خدمات مهندسی و شبیه سازی پویا تدبیر (CMATS) است که در پارک علم و فناوری دانشگاه تربیت مدرس مستقر می باشد.

ارتباط

رزومه

The Effect of Pre-Strain on Microalloyed Steel Weld Metal in the Presence of Hydrogen

R Khatib Zadeh Davani, R Miresmaeili
Journal Papers , , {Pages }

Abstract

The effect of pulsed laser welding on hot cracking susceptible region size and weld pool internal geometry of Inconel 718: Numerical and experimental approaches

A Keivanloo, H Naffakh-Moosavy, R Miresmaeili
Journal Papers , , {Pages }

Abstract

Effects of a Novel Severe Plastic Deformation Approach on Microstructural and Mechanical Characteristics of a Medium Manganese Advanced High Strength Steel

M Dehghan, R Miresmaeili, M Askari-Paykani, HR Shahverdi
Journal Papers , , {Pages }

Abstract

Effects of surface nanocrystallization on the anodic oxidation behavior of Aluminum

AH Astaraee, R Miresmaeili, S Bagherifard, M Guagliano
Journal Papers , , {Pages }

Abstract

Sliding wear behavior of Ni–Co–P multilayer coatings electrodeposited by pulse reverse method

A Karimzadeh, A Sabour Rouhaghdam, M Aliofkhazraei, R Miresmaeili
Journal PapersTribology International , Volume 141 , 2020 January 1, {Pages 105914 }

Abstract

In this study, Ni–Co–P multilayer coatings were deposited using pulse reverse current. Alternative Co/P-rich and Co/P-poor layers were fabricated by alternation of cathodic duty cycle at 20 and 90% values. The layer thickness was altered within 3000–90 nm range. Coatings evaluation involved investigation of microstructure and chemical composition, microhardness, fracture toughness, and tribological measurements. The results showed that the thinning the layers enhanced the microhardness by up to 700 Hv and improved cracking resistance. Tribological study indicated that decreasing the layer thickness resulted in the friction coefficient lower than 0.4 and decreasing the mass loss and changing the wear mechanism from delamination to co

The effect of surface mechanical attrition treatment (SMAT) on plastic deformation mechanisms and mechanical properties of austenitic stainless steel 316L

Elham Rajabi, Reza Miresmaeili, Mahmood Aliofkhazraei
Journal PapersMaterials Research Express , 2020 January 2, {Pages }

Abstract

In this work, surface mechanical attrition treatment (SMAT) was carried out on 316L stainless steel in order to study the effects of treatment parameters on the deformed depth and deformation mechanisms. results showed that the residual stresses caused by collision of shots led to formation of martensite. Increase in treatment duration and shot size led to more martensite formation because of higher strains. An increasing hardness profile was also observed from the depth towards the surface in SMATed samples which was due to grain refinement, martensite formation and twinning. Strength of samples also improved by SMAT so that the yield strength in the sample treated for 2h by 6mm shots was increased by 58 percent. In addition, Crussard-Jaou

Damage mechanisms in the ultra-low cycle fatigue loading

M Kermajani, F Malek Ghaini, R Miresmaeili, MK Baghi-abadi, M Mousavi-nasab
Journal PapersEngineering Fracture Mechanics , Volume 223 , 2020 January 1, {Pages 106772 }

Abstract

Predicting extreme limit states in steel structures using finite element simulations requires an understanding of the fracture mechanisms themselves and the relationship of various models to these mechanisms. Aiming at addressing dominant damage mechanisms in the Ultra-Low-Cycle Fatigue (ULCF) regime which occurs during earthquakes, circumferentially notched tensile bars were subjected to cyclic loadings with large displacement amplitudes. Two weld metals from rutile and basic classifications and two different grades of structural steels were selected to determine the role of microstructural features in the response of materials to ULCF conditions. Scanning Electron Microscopy (SEM) technique equipped with 3D measurement software was employ

Martensitic transformation in stoichiometric NiMn and Ni–Mn-X alloys: A first principles study

Masoud Rahbar Niazi, Sohrab Sanjabi, Yousef Jamali, Reza Miresmaeili
Journal PapersJournal of Alloys and Compounds , 2020 June 7, {Pages 155978 }

Abstract

The martensitic phase transformation in stoichiometric NiMn alloy and its shape memory effect is investigated using first principles method based on Density Functional Theory (DFT). The elastic properties of the B2 austenite and the L10 martensite phases were compared and the results indicated that the B2 phase has a low elastic shear modulus along the [110] direction giving rise to the formation of L10. Electronic density of states (DOS) calculations showed that the existence of the pseudo-gap appearing at the Fermi level which stabilizes the martensite phase against the austenite depends on both magnetism and the tetragonality ratio. Using geometrically nonlinear theory of martensite it was found that large volume change and twinning shea

Characterization of wire arc additive manufactured products: A comparison between as-deposited and inter-layer cold worked specimens

Behzad Parvaresh, Reza Miresmaeili, Morteza Yazdizadeh
Journal PapersJournal of Manufacturing Processes , Volume 57 , 2020 September 1, {Pages 61-71 }

Abstract

The presence of large dendrites and alloy segregation in as-deposited wire arc additive manufacturing (WAAM) products results in a wide range of mechanical properties that are often inferior to wrought ones. In this study, the effect of inter-layer cold working on the microstructure and mechanical properties of AISI 347 samples manufactured by WAAM has been investigated. The average hardness of single-pass welding, as-deposited, and cold worked WAAM samples were 190 HV, 249 HV, and 323 HV, respectively. Inter-layer cold working has led to an increase in ultimate tensile strength from 576 MPa to 803 MPa and yield strength from 395 MPa to 697 MPa. Also, Inter-layer cold working and thermal energy due to the deposition of subsequ

Investigating Isotropy of Mechanical and Wear Properties in As-Deposited and Inter-Layer Cold Worked Specimens Manufactured by Wire Arc Additive Manufacturing

Behzad Parvaresh, Reza Salehan, Reza Miresmaeili
Journal PapersMetals and Materials International , 2020 July 2, {Pages 14-Jan }

Abstract

Abstract Wire arc additive manufacturing (WAAM) has several industrial applications because of its advantages over other additive manufacturing methods. In this study, two stainless steel 347 walls, namely as-deposited (AD) wall, and inter-layer cold worked (CW) wall, were prepared using the WAAM method to investigate the isotropy of their mechanical properties and wear properties in vertical and horizontal directions. For the AD wall, the mean yield strength, ultimate strength, and elongation of horizontal samples were 410 MPa, 620 MPa, and 47%, respectively. In comparison, these values for the vertical (V) samples were 402 MPa, 590 MPa, and 49%, respectively. For the CW wall, the mean yield strength, ultimate strength, and elongation of

Effect of Microstructure on the Mechanical Properties and Fracture Toughness of API X65 Pipeline Steel in the Presence of Hydrogen

Meysam Ranjbar, Reza Miresmaeili, Mohammad Reza Naimi-Jamal, Majid Mirzaei
Journal PapersMetals and Materials International , 2020 October 16, {Pages 17-Jan }

Abstract

This study investigated the influence of microstructure on the mechanical properties and fracture toughness of API X65 pipeline steel in the presence of hydrogen. In this study, electrochemical method was used for hydrogen charging and indentation technique was applied to obtain the fracture toughness. The results showed that in the presence of hydrogen, elongation (EL%), reduction of area (RA), ductile fracture percentage, and fracture toughness of all microstructures decreased. The microstructure of martensite (M)+ bainite (B)+ ferrite (F), had the highest hydrogen trapping and uptake (C app) as 8.58? 10–6 mol cm− 3 and the lowest apparent hydrogen diffusivity (D app) as 5.68? 10− 10 m 2 s− 1; thus, the maximum decrements of 33% i

Effects of annealing on the tribological behavior of Zr60Cu10Al15Ni15 bulk metallic glass

Reza Salehan, Hamid Reza Shahverdi, Reza Miresmaeili
Journal PapersJournal of Non-Crystalline Solids , Volume 517 , 2019 August 1, {Pages 127-136 }

Abstract

Zr-based bulk metallic glasses (BMGs) offer a noticeable potential for engineering applications because of their good mechanical properties. Annealing plays an important role in changing the mechanical properties of these materials, especially the hardness and ductility. However, the effects of annealing on the tribological behavior of the BMGs are still inexplicit. In the present study, the wear behavior of the as-cast and different annealed states of Zr60Cu10Al15Ni15 BMG, i.e., sliding against AISI 52100 steel, was evaluated by the pin-on-disc measurement technique. The results indicate that the coefficient of friction varies from 0.39 to 0.63. The relaxed sample had the lowest wear rate, while the hardness of the partially and fully crys

Intercritical and subcritical spheroidization of 10B38 cold heading steel

Ata Radnia, Farshid Malek Ghaini, Reza Miresmaeili
Journal PapersMaterials Research Express , 2019 June 12, {Pages }

Abstract

For the production of bolts by cold forging, the hardenable steel has to be in a soft and ductile state. The Cold Heading Quality Steel is achievable by a spherodization heat treatment on the hot rolled material. The scope of this study is a boron bearing medium carbon steel which has many promising properties as bolting material. The experimentations covers two different initial conditions before the spheroidization heat treatment: hot rolled and quenched. Two spheroidization procedures are also considered: subcritical and intercritical heat treatments. To assess the cold formability, a special notched tensile test is employed and the results are supported with metallographic and hardness measurements. For both subcritical and intercritica

Hardness and wear behavior of surface mechanical attrition treated titanium

Mehrangiz Rajabi, Reza Miresmaeili, Mahmood Aliofkhazraei
Journal PapersMaterials Research Express , Volume 6 , Issue 6, 2019 March 6, {Pages 065003 }

Abstract

Wear test results on commercial pure titanium (CP-Ti) indicated that despite the increase in hardness by 2.6 times after the surface mechanical attrition treatment (SMAT), wear properties of the treated samples were diminished. Samples embrittlement and wear rate increased over process time while hardness increased. In other words, wear properties depend on both hardness and toughness and simply improving hardness characteristic would not necessarily lead to optimized wear properties. Under low forces, abrasive wear with ploughing mechanism and adhesive wear were active. However, ploughing, plastic deformation and delamination became dominant wearing mechanisms under high forces. Delamination was actually responsible for harsher wearing of

Investigation of structural and mechanical properties of magnetic pulse welded dissimilar aluminum alloys

Mehdi Pourabbas, Amir Abdollah-zadeh, Morteza Sarvari, Majid Pouranvari, Reza Miresmaeili
Journal PapersJournal of Manufacturing Processes , Volume 37 , 2019 January 1, {Pages 292-304 }

Abstract

The present study aimed to join AA4014 to AA7075 by using magnetic pulse welding (MPW). In addition, acceptable joints were achieved by selecting welding parameters such as collision angle and discharge energy appropriately. Changing collision angle and discharge energy can influence the velocity, leading to the formation of three different types of welding interfaces with wavy, molten wavy and porous morphologies. The formation of these various morphologies is mainly associated with different collision angle parameters. The hardness of the welding interface with molten layer was significantly higher than that of the base metals due to the grain refinement phenomenon occurring through the rapid melting and solidification during MPW process.

Effect of Hydrogen on Mechanical Properties of Pipeline Steel Weld Metal

Zadeh Davani Reza Khatib, Reza Miresmaeili
Journal Papers , Volume 29 , Issue 10400583, 2019 January 1, {Pages 15-Apr }

Abstract

In this study، the effect of hydrogen on the mechanical properties of pipeline steel weld metal was investigated. In pipelines، weld metal is a significant part، and this part especially has been evaluated because of the presence of sour gas containing hydrogen atoms and other hazardous solutes which can harm base metal and weld metal. In this research، hydrogen charging was carried out due to the diffusion of hydrogen atoms into the sample through electrochemical pre-charging and immersion in the solution method. According to the results obtained in this study، in the presence of hydrogen، the yield stress of weld metal in Shielded Metal Arc Welding (SMAW) increased by 16%، and hardness in both direct and indirect charging method in

Effect of Hydrogen on Mechanical Properties of Pipeline Steel Weld Metal

R Khatib Zadeh Davani, R Miresmaeili, M Soltanmohammadi
Journal Papers , , {Pages }

Abstract

Electrodeposition of Ni–Mo and Ni–Mo-(nano Al2O3) multilayer coatings

A Rezaeiolum, M Aliofkhazraei, A Karimzadeh, AS Rouhaghdam, R Miresmaeili
Journal PapersSurface Engineering , Volume 34 , Issue 6, 2018 June 3, {Pages 423-432 }

Abstract

In the present work, multilayer Ni–Mo–Al2O3 and Ni–Mo coatings were fabricated on the low-carbon steel using pulse electrodeposition technique from a citrate-ammonia bath. The coatings with different number of layers (32, 128 and 512) were electrodeposited by the periodic alteration of duty cycle (between 20 and 90%) at a constant frequency of 400 Hz and an average current density of 6 A dm−2. The corrosion resistance of the coatings was estimated using potentiodynamic polarisation and electrochemical impedance techniques and wear properties was also evaluated using pin-on-disk wear test. Potentiodynamic polarisation and electrochemical impedance in 3.5 wt-% NaCl solution showed that 128-layer nanocomposite coatings had the

Improvement in tribological behavior of commercial pure titanium (CP-Ti) by surface mechanical attrition treatment (SMAT)

Saeed Alikhani Chamgordani, Reza Miresmaeili, Mahmood Aliofkhazraei
Journal PapersTribology International , Volume 119 , 2018 March 31, {Pages 744-752 }

Abstract

In the present work, commercial pure titanium (CP-Ti) samples were subjected to surface mechanical attrition treatment (SMAT) under different durations in order to improve surface properties and produce an ultrafine grain layer. Cross section and surface of SMATed samples were analyzed through optical microscopy (OM) and scanning electron microscopy (SEM) methods. The finest grain size on surface, measured with X-ray diffraction (XRD) test, was 12.2 nm. While the initial grain size was measured to be averagely 70 μm. Hardness of SMATed samples increased by 2.8 times. Increase in hardness was due to plastic deformation and work-hardening. SMAT led to improvement of wear properties in CP-Ti so that its friction coefficient decreased by 66%.

Second-phase hardening and rule of mixture, microbands and dislocation hardening in Fe67. 4− xCr15. 5Ni14. 1Si3. 0Bx (x= 0, 2) alloy systems

Mohsen Askari-Paykani, Hamid Reza Shahverdi, Reza Miresmaeili, Hossein Beladi
Journal PapersMaterials Science and Engineering: A , Volume 715 , 2018 February 7, {Pages 214-225 }

Abstract

The work-hardening mechanisms of two novel advanced high-strength steels (Fe67.4−xCr15.5Ni14.1Si3.0Bx [x = 0 (0B), 2 (2B)] wt%) were investigated by means of field emission gun scanning electron microscopy coupled with angle-selective backscattered detection, transmission electron microscopy, and electron backscattered diffraction. The 0B and 2B specimens combined low yield stresses and high ultimate tensile strengths with good total elongation percentages, with results of 219?MPa, 568?MPa, and 83% and 357?MPa, 703?MPa, and 42%, respectively. The 0B and 2B alloys were characterized by a decreasing work hardening rate, followed by a constant and finally a steep decreasing change tendency. Detailed angle-selective backscattered and electron

دروس نیمسال جاری

  • دكتري
    شبيه سازي در مهندسي مواد ( واحد)
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  • كارشناسي ارشد
    شكست و خستگي (مكانيك شكست) ( واحد)
  • كارشناسي ارشد
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