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  5. EFFECTS OF HEAT TREATMENT ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF V MICROALLOYED BULB FLAT ST

EFFECTS OF HEAT TREATMENT ON MICROSTRUCTURE AND MECHANICAL PROPERTIES OF V MICROALLOYED BULB FLAT ST

来源 :第七届低合金高强度钢国际会议 | 被引量 : 0次 | 上传用户：ssfeng
【摘 要】
：
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 pe
【作 者】
：
CHEN Xue-hui YANG Cai-fu SU Hang Chai Feng Zhang Qian Hou Yaqing 
【机 构】
：
Central Iron and Steel Research Institute Beijing 100081,China
【出 处】
：
第七届低合金高强度钢国际会议
【发表日期】
：
2015年11期
【关键词】
：
V microalloyed bulb flat steel heat treatment granular bainite low temperature t 
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　　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.
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