韦家虎,董建新,付书红,姚志浩,张麦仓

• 1:北京科技大学材料科学与工程学院
• 2:北京航空材料研究院

摘要(Abstract)：

利用Gleeble-1500热模拟试验机,研究了GH4169合金在变形温度为900～1100℃、应变速率为0.1 s-1、1 s-1、20 s-1、最大变形量高达70%条件下的高温变形行为,建立了GH4169合金的高温变形流动应力模型,分析了变形工艺参数对合金晶粒再结晶的影响规律。结果表明:随变形温度的降低和应变速率的增加,合金变形抗力显著增加;当变形量超过临界变形量时,随着变形量增加或变形温度的提高,合金的再结晶程度逐渐增加;然而,变形速率的变化,对该合金再结晶影响较为复杂。

关键词(KeyWords)： GH4169;热变形;再结晶;本构模型

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 韦家虎,董建新,付书红,姚志浩,张麦仓

DOI: 10.13289/j.issn.1009-6264.2013.07.023

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