%0 Journal Article
%T EFFECT OF HEAT TREATMENT ON FATIGUE BEHAVIOR OF 25Cr2NiMo1V STEEL<br>热处理对25Cr2NiMo1V钢疲劳特性的影响
%A ZHU Mingliang
%A XUAN Fuzhen
%A ZHU Kuilong
%A WANG Guozhen
%A JIA Tianyao School of Mechanical
%A Power Engineering
%A East China University of Science
%A Technology
%A Shanghai
%A <br>朱明亮
%A 轩福贞
%A 朱奎龙
%A 王国珍
%A 贾天耀
%J 金属学报
%D 2009
%I 
%X 对商用25Cr2NiMo1V钢进行了955℃淬火+665℃回火的高压端热处理(HP)和900℃淬火+625℃回火的低压端热处理(LP).通过疲劳实验测定了HP与LP试样疲劳门槛值和疲劳裂纹扩展速率.结果表明,在门槛值区,HP试样门槛值高于LP试样,而其裂纹扩展速率却低于LP试样,HP试样抵抗疲劳裂纹扩展能力高于LP试样.材料抗疲劳裂纹扩展能力的不同是由裂纹的闭合引起的,表面粗糙度诱发裂纹闭合为主要因素.HP试样中回火贝氏体的紧密分布,原始奥氏体晶粒较大以及LP试样中回火马氏体抵抗裂纹扩展能力相对较弱使HP试样中粗糙度诱发裂纹的闭合程度大于LP试样.在Paris区,HP与LP试样的扩展速率相近,裂纹扩展速率对材料微观组织和应力比的影响不敏感.
%K 25Cr2NiMo1V steel
%K combined rotor
%K fatigue threshold
%K crack growth rate
%K crack closure<br>25Cr2NiMo1V钢
%K 一体化转子
%K 疲劳门槛值
%K 裂纹扩展速率
%K 裂纹闭合
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=792505A75D437EED25090DE055B5C599&yid=DE12191FBD62783C&vid=94E7F66E6C42FA23&iid=38B194292C032A66&sid=CA9ED1AB4D9E3E04&eid=86C0C9A759FDA8CA&journal_id=0412-1961&journal_name=金属学报&referenced_num=1&reference_num=18