TY - JOUR
T1 - Effect of high temperature deformation on the microstructure, mechanical properties and hydrogen embrittlement of 2.25Cr–1Mo-0.25 V steel
AU - Wang, Yafei
AU - Cheng, Guangxu
AU - Qin, Mu
AU - Li, Qing
AU - Zhang, Zaoxiao
AU - Chen, Kang
AU - Li, Yun
AU - Hu, Haijun
AU - Wu, Wei
AU - Zhang, Jianxiao
N1 - Funding Information:
The authors would like to gratefully acknowledge the financial support from the National Basic Research Program of China (973 Program, Grant No. 2015CB057602 ). The authors would also like to thank Dr. Degang Xie in the State Key Laboratory for Mechanical Behavior of Materials in Xi'an Jiaotong University for his suggestion in the image processing method.
Publisher Copyright:
© 2017 Hydrogen Energy Publications LLC
PY - 2017
Y1 - 2017
N2 - In this paper, the effects of high temperature deformation on the microstructure, mechanical properties and hydrogen embrittlement (HE) of the 2.25Cr–1Mo-0.25 V steel was investigated by a scanning electron microscope (SEM), a transmission electron microscope (TEM) and tensile tests. The SEM and TEM images demonstrated that high temperature plastic deformation (HTPD) led to the coarsening of carbides and the dislocation density increase. The tensile tests displayed that the HTPD resulted in the cracking susceptibility increase, as indicated by the increased numbers and sizes of cracks at the fractured surface. This was attributed to the coarsening of carbides during high temperature deformation. In contrast, the HTPD highly decreased the loss of ductility compared to the un-deformed specimens, although the amount of ductility losses (elongation or reduction of area) did not change significantly as the HTPD increased. The correlations among carbides, hydrogen and cracks were discussed.
AB - In this paper, the effects of high temperature deformation on the microstructure, mechanical properties and hydrogen embrittlement (HE) of the 2.25Cr–1Mo-0.25 V steel was investigated by a scanning electron microscope (SEM), a transmission electron microscope (TEM) and tensile tests. The SEM and TEM images demonstrated that high temperature plastic deformation (HTPD) led to the coarsening of carbides and the dislocation density increase. The tensile tests displayed that the HTPD resulted in the cracking susceptibility increase, as indicated by the increased numbers and sizes of cracks at the fractured surface. This was attributed to the coarsening of carbides during high temperature deformation. In contrast, the HTPD highly decreased the loss of ductility compared to the un-deformed specimens, although the amount of ductility losses (elongation or reduction of area) did not change significantly as the HTPD increased. The correlations among carbides, hydrogen and cracks were discussed.
UR - http://www.scopus.com/inward/record.url?scp=85028361290&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85028361290&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2017.07.237
DO - 10.1016/j.ijhydene.2017.07.237
M3 - Article
AN - SCOPUS:85028361290
SN - 0360-3199
VL - 42
SP - 24549
EP - 24559
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 38
ER -
