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材料工程  2013 

AISI403马氏体不锈钢的热变形特性研究

DOI: 10.3969/j.issn.1001-4381.2013.05.008, PP. 38-43

Keywords: AISI403马氏体不锈钢,动态再结晶,热加工图

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Abstract:

采用Gleeble-1500D热模拟试验机对AISI403马氏体不锈钢进行高温热压缩实验,结合金相组织观察,对其流变应力进行了研究。结果表明403钢在950~1150℃,应变速率为0.01~0.1s-1的条件下,发生了较明显的动态再结晶;利用Zener-Hollomon参数的双曲对数函数能较好地描述403钢的流变行为;经回归得到了403钢峰值应力σP的表达式和热变形激活能Q值;通过热加工图的建立获得最佳热变形条件及预测流变失稳区。

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