EFFECTS OF HEAT TREATMENT ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF V MICROALLOYED BULB FLAT STEEL
The effects of heat treatment on microstructure and mechanical properties of V microalloyed bulb flat steel were studied.The results showed that a large number of granular bainite was formed in the period of rolling or normalizing continuous cooling.The low-temperature toughness of the steel was decreased obviously with the formation of granular bainite.Akv-40 could be up to 46J by tempering treatment with the granular decomposed.Furthermore Akv-40 could be up to 144J by normalizing and tempering treatment since that the granular bainite decomposed sufficiently.
V microalloyed bulb flat steel heat treatment granular bainite low temperature toughness
CHEN Xue-hui YANG Cai-fu SU Hang Chai Feng Zhang Qian Hou Yaqing
Central Iron and Steel Research Institute Beijing 100081,China
国内会议
杭州
英文
1087-1093
2015-11-11（万方平台首次上网日期，不代表论文的发表时间）