Influence of Heat Treatment on the Workability of Modified 9Cr-2W Steel with Higher B Content [post]

Hyeong Min Heo, Jun Hwan Kim, Sung Ho Kim, Jong Ryoul Kim, Won Jin Moon
2019 unpublished
In this study, the effect of heat treatment was investigated to influence the occurrence of fracture during manufacturing process of Alloy B steel with boron contents as high as 130 ppm. As the content of boron increases, it affects the phase transformation temperature and texture. The development of {111}<uvw> components in the γ-fiber is affected depending on the austenite fraction after phase transformation. The Alloy B steel indicated that the increase in the boron content
more » ... boron content increased the α to γ phase transformation temperature such that sufficient transformation did not occur in the normalizing condition. The cracks occurred at the point of the transition from elastic to plastic deformation in the ND direction during the rolling process, thereby resulting in failure. Therefore, it is necessary to avoid the intermediate heat treatment condition in which γ-fiber does not fully develop, i.e., an imperfect normalization.
doi:10.20944/preprints201907.0193.v1 fatcat:glgt6cphr5difcev53ip3k2p34