%0 Journal Article
%T 4Cr5MoSiV1钢的热变形行为及热加工图<br>Hot Deformation Behavior and Hot Processing Map of 4Cr5MoSiV1 Steel
%A 康福伟
%A 王焕敏
%A 张雪敏
%A 白鑫
%A 张强
%A 郭二军
%J Material Sciences
%P 1-6
%@ 2160-7621
%D 2013
%I Hans Publishing
%R 10.12677/MS.2013.31001
%X <div style=\"text-align:justify;\">
	<span style=\"line-height:1.5;\">利用</span><span style=\"line-height:1.5;\">Gleeble-1500D</span><span style=\"line-height:1.5;\">热模拟试验机对</span><span style=\"line-height:1.5;\">4Cr5MoSiV1</span><span style=\"line-height:1.5;\">钢在</span><span style=\"line-height:1.5;\">950</span><span style=\"line-height:1.5;\">℃</span><span style=\"line-height:1.5;\">~</span><span style=\"line-height:1.5;\">1100</span><span style=\"line-height:1.5;\">℃</span><span style=\"line-height:1.5;\">，应变速率为</span><span style=\"line-height:1.5;\">0.01</span><span style=\"line-height:1.5;\">~</span><span style=\"line-height:1.5;\">10.0 s</span><span style=\"line-height:1.5;\">？1</span><span style=\"line-height:1.5;\">，最大应变量为</span><span style=\"line-height:1.5;\">50%</span><span style=\"line-height:1.5;\">的条件下进行了热压缩实验。结果表明：真应变</span><span style=\"line-height:1.5;\">–</span><span style=\"line-height:1.5;\">应力曲线在应变速率为</span><span style=\"line-height:1.5;\">10 s</span><span style=\"line-height:1.5;\">？1</span><span style=\"line-height:1.5;\">时出现波动现象</span><span style=\"line-height:1.5;\">；经计算得到</span><span style=\"line-height:1.5;\">4Cr5MoSiV1</span><span style=\"line-height:1.5;\">钢的激活能为</span><span style=\"line-height:1.5;\">416.16 kJ·mol</span><span style=\"line-height:1.5;\">？1</span><span style=\"line-height:1.5;\">，建立该合金的本构方程形式为</span><span style=\"line-height:1.5;\">，经验证与实验结果吻合较好；基于动态材料模型建立的热加工图可分为两个区域，在低应变速率</span><span style=\"line-height:1.5;\">0.01 s</span><span style=\"line-height:1.5;\">？1</span><span style=\"line-height:1.5;\">和</span><span style=\"line-height:1.5;\">0.1 s</span><span style=\"line-height:1.5;\">？1</span><span style=\"line-height:1.5;\">时为加工稳定区，且变形温度为</span><span style=\"line-height:1.5;\">1050</span><span style=\"line-height:1.5;\">℃</span><span style=\"line-height:1.5;\">时，能量耗散功率达到最大值</span><span style=\"line-height:1.5;\">0.3</span><span style=\"line-height:1.5;\">；在高应变速率</span><span style=\"line-height:1.5;\">1 s</span><span style=\"line-height:1.5;\">？1</span><span style=\"line-height:1.5;\">和</span><span style=\"line-height:1.5;\">10 s</span><span style=\"line-height:1.5;\">？1</span><span style=\"line-height:1.5;\">时为加工失稳区。结合变形组织的分析，合金在稳定区下具有较好的热加工</span><span style=\"line-height:1.5;\">性能。&lt;br/&gt;</span><span style=\"line-height:1.5;\">The hot deformation characteristics of 4Cr5MoSiV1 steel have been investigated by hot compression tests in the temperature range of 950？C to 1100？C at strain rates of 0.01 s</span><span style=\"line-height:1.5;\">？</span><span style=\"line-height:1.5;\">1</span><span
%K 4Cr5MoSiV1钢；激活能；本构方程；热加工图<br>4Cr5MoSiV1 Steel
%K Activation Energy
%K Constitutive Equation
%K Hot Processing Map
%U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=9314