Microstructure Evolution and Mechanical Properties of Hot-Rolled Medium Manganese TRIP Steels

2013 ◽  
pp. 909-915
Author(s):  
Zhihui Cai ◽  
Hua Ding ◽  
Xin Xue ◽  
Qibin Xin ◽  
Jun Jiang
2011 ◽  
Vol 239-242 ◽  
pp. 1092-1095
Author(s):  
Xu Tao Gao ◽  
Ai Min Zhao ◽  
Zheng Zhi Zhao ◽  
Ming Ming Zhang ◽  
Di Tang

By means of optical microscopy(OM), scanning electron microscopy(SEM),X-ray diffraction(XRD),And tensile test, Mechanical Properties of hot rolled transformation -induced plasticity (TRIP) steels which were prepared through three different coiling temperature was investigated. Result reveals that the formability index of the experimental steel descends when the coiling temperature becomes low. Different coiling temperature has greater impact on retained austenite. Amount and carbon content of retained austenite in the experimental steel get less with lower coiling temperature.


2021 ◽  
Vol 1035 ◽  
pp. 404-409
Author(s):  
Zhe Rui Zhang ◽  
Ren Bo Song ◽  
Nai Peng Zhou ◽  
Wei Feng Huo

In this study, a new Fe-6Mn-4Al-0.4C high strength medium manganese hot rolled steel sheet was designed. The influence mechanism of the intercritical annealing (IA) temperature on microstructure evolution and mechanical properties of experimental steel were studied by SEM and XRD. The experimental steel was held for 30 minutes at 640°C, 680°C, 720°C, 760°C, 800°C, respectively. When the annealing temperature was 640°C, cementite particles precipitated between the austenite and ferrite phase boundary. As the annealing temperature increased, the cementite gradually dissolved and disappeared, the fraction of lamellar austenite increased significantly. When the annealing temperature is 800°C, the coarse equiaxed austenite and ferrite appeared. The yield strength (YS) decreased, the product of strength and elongation (PSE) and total elongation (TE) both increased first and then decreased, while the ultimate tensile strength (UTS) showed the opposite trend. The experimental steel exhibited excellent comprehensive mechanical properties after held at 760°C for 30 min. The UTS was 870 MPa, the YS was 703 MPa, and the TE was 77 %, the PSE was 67 GPa·%.


2020 ◽  
Vol 771 ◽  
pp. 138629 ◽  
Author(s):  
Xiaodong Tan ◽  
Huansheng He ◽  
Wenjun Lu ◽  
Liu Yang ◽  
Bo Tang ◽  
...  

2017 ◽  
Vol 32 (18) ◽  
pp. 3564-3573
Author(s):  
Liuwei Zheng ◽  
Kaibo Nie ◽  
Huihui Nie ◽  
Wanggang Zhang ◽  
Wei Liang ◽  
...  

Abstract


2005 ◽  
Vol 15 (2) ◽  
pp. 115-120 ◽  
Author(s):  
D. E. Kim ◽  
Y. K. Park ◽  
O. Y. Lee ◽  
K. G. Jin ◽  
S. J. Kim

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