Fracture Behavior and Mechanical Properties of a Thermomechanical TRIP Steel Under Simulated Heat Treatment Conditions

Published on Apr 1, 2021in Metallography, Microstructure, and Analysis
· DOI :10.1007/S13632-021-00723-Z
Sasan Hassanlou (Shahid Beheshti University), Mahmood Sameezadeh3
Estimated H-index: 3
(Shahid Beheshti University),
Majid Vaseghi7
Estimated H-index: 7
(Shahid Beheshti University)
In this research, hypereutectoid Si–Mn TRIP steel was prepared via casting method followed by thermomechanical processing and different heat treatments. Subsequently, fracture behavior and mechanical properties of the prepared steel were investigated. The time–temperature–transformation curves of the specimens were predicted by a simulation software. Their mechanical properties were studied through tensile, hardness, and impact tests. The microstructure and fracture behavior of the specimens were evaluated using an optical microscope, scanning electron microscope and fractographic analysis. Results indicated that the heat-treated sample containing a multi-phase microstructure of bainite, martensite, pearlite and retained austenite, had the highest ultimate tensile strength around 1,300 MPa. The software predictions of the heat treatments were in good accordance with the microstructural results. The samples have undergone thermomechanical process and heat treatment including isothermal transformation showed brittle behavior with intergranular and cleavage fracture surfaces. In addition, the two-stage quenching cycles resulted in dual-phase microstructure composed of martensite embedded in retained austenite with a combination of brittle and ductile fracture behavior.
#1Arun S. Thakare (COEP: College of Engineering, Pune)H-Index: 1
#2S. P. Butee (COEP: College of Engineering, Pune)H-Index: 4
Last. K. R. Kamble (COEP: College of Engineering, Pune)H-Index: 1
view all 3 authors...
Precipitation hardening ferritic pearlitic (PHFP) grade 42CrMo4 steel was subjected to thermomechanical processing (TMP) comprising 0.2–0.6 strain, followed by isothermal holding at 350–650 °C. Optical microscopy performed along with SEM and simulation results using forge NxT 3.0 est disponible simulation software revealed a transformation from initial ferrite–pearlite microstructure to a ferrite–bainite microstructure for lower holding temperatures, revealing different morphologies of these pha...
1 CitationsSource
#1Qiu Guoxing (NU: Northeastern University)H-Index: 6
#2Dongping Zhan (NU: Northeastern University)H-Index: 7
Last. Huishu ZhangH-Index: 6
view all 7 authors...
The effects of normalizing and tempering temperatures on the microstructures and mechanical properties of China Low Activation Martensitic (CLAM) steel with and without yttrium were studied. Based on the optimized traditional heat treatment, two special intermediate heat treatments were studied to improve the mechanical properties of the steels. The AC3 temperature of the CLAM steel was increased by adding yttrium. The optimized traditional heat treatments were 1000 °C × 30 min + 755 °C × 90 min...
4 CitationsSource
#1S. Arjomandi (IUST: Iran University of Science and Technology)H-Index: 1
#2Hamidreza Jafarian (IUST: Iran University of Science and Technology)H-Index: 19
Last. Nokeun Park (Yeungnam University)H-Index: 16
view all 3 authors...
Abstract In the present paper, microstructural evolution and mechanical properties changes of an ultrafine-grains (UFGs) Fe-24Ni-0.2C steel processed via accumulative roll bonding (ARB) is investigated. Characterization of microstructure with Electron Backscatter Diffraction (EBSD) technique revealed that a substantial grain refinement happened after 6-cycle ARB process. As well, elongated UFGs austenite with mean grain size smaller than 200 nm was obtained in such a condition. Furthermore, phas...
3 CitationsSource
#1O. Altuntas (Gazi University)H-Index: 1
#1Onur Altuntaş (Gazi University)H-Index: 1
Last. Ahmet Güral (Gazi University)H-Index: 8
view all 2 authors...
Abstract Spherical cementite particles in the bainitic matrix in high carbon steel processed by powder metallurgy (PM) method were produced and compared with separately sintered, fully bainitic and spherical cementite in the ferritic matrix microstructures for their microstructure-hardness-dry sliding wear properties. The primary cementite plus dense lamellar pearlite structures were achieved in the sintered specimens. The spherical cementites in the ferritic matrix (SCFM) were obtained by over-...
3 CitationsSource
Currently, lightweight materials and structures are potentially required for economical aspects. A major preoccupation of engineers and materials scientists is to create and to develop existing materials to satisfy the rising needs of industries and population. It is well known that intermetallic compounds, such as aluminides, are used for a wide range of applications, due to their superior properties. These materials are generally produced through conventional manufacturing routes: melting, cas...
2 CitationsSource
#1Yongfeng Shen (NU: Northeastern University)H-Index: 24
#2Xiufen Dong (MOE: Chinese Ministry of Education)H-Index: 3
Last. N. Jia (NU: Northeastern University)H-Index: 15
view all 4 authors...
Ultrahigh strength and good ductility are obtained for two low-alloy transformation-induced-plasticity steels fabricated by the quenching and partitioning (Q&P) processing, respectively. Compared to 0.19 wt.% C steel in which γ → α′-martensite transformation is the dominant mechanism under deformation, the relatively high C content of austenite in 0.47 wt.% C steel is responsible for the transformation from γ to e-martensite, suggesting that the transformation is not solely determined by the sta...
6 CitationsSource
#1Markus RadajewskiH-Index: 8
#2Ralf EcknerH-Index: 7
Last. Lutz KrügerH-Index: 22
view all 5 authors...
4 CitationsSource
#1Fei Zhu (Soochow University (Suzhou))H-Index: 7
#2Ye Fei (Soochow University (Suzhou))H-Index: 2
Last. Bairong Shen (Sichuan University)H-Index: 31
view all 5 authors...
Heart disease is a malignant threat to human health. Electrocardiogram (ECG) tests are used to help diagnose heart disease by recording the heart’s activity. However, automated medical-aided diagnosis with computers usually requires a large volume of labeled clinical data without patients' privacy to train the model, which is an empirical problem that still needs to be solved. To address this problem, we propose a generative adversarial network (GAN), which is composed of a bidirectional long sh...
323 CitationsSource
#1Hebin Wang (Jiangxi University of Science and Technology)H-Index: 1
#1Hebin Wang (Jiangxi University of Science and Technology)H-Index: 2
Last. Jishan ZhangH-Index: 27
view all 9 authors...
M3:2 high-speed steel (HSS) billets with or without Nb addition were prepared by spray deposition. The effects of Nb and post-thermal-mechanical processing (decomposition treatment and hot forging), as well as heat treatment, on the microstructure and properties of M3:2 HSS were investigated. The microstructure of the as-deposited M3:2 HSS consisted of equiaxed grains with a mean size of approximately 25 μm and discontinuous plate-like M2C and irregular MC carbides distributed along grain bounda...
3 CitationsSource
#1Zhen-Lei LiH-Index: 2
#2Chen DongH-Index: 3
Last. Guodong WangH-Index: 32
view all 5 authors...
6 CitationsSource
Cited By0