乔景振,田保红,张毅,周延军,国秀花,宋克兴

• 1:河南科技大学材料科学与工程学院
• 2:有色金属共性技术河南省协同创新中心

摘要(Abstract)：

采用Gleeble-1500D热模拟试验机,在温度为550~900℃,应变速率为0.001~10 s~(-1)的条件下对Cu-7Ni-7Al-2Fe-2Mn-0.5Ti合金的热变形行为进行研究。分析应变速率和变形温度对合金热变形组织的影响,建立合金Cu-7Ni-7Al-2Fe-2Mn-0.5Ti的热变形本构方程。结果表明:Cu-7Ni-7Al-2Fe-2Mn-0.5Ti合金高温热变形时的热变形激活能Q为318883 J·mol-1,合金的流变应力随变形温度的升高和应变速率的降低而降低。当变形温度较高、应变速率较低时,合金容易发生动态再结晶。

关键词(KeyWords)： Cu-7Ni-7Al-2Fe-2Mn-0.5Ti合金;真应力-应变曲线;本构方程;热变形激活能;显微组织

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划基金(2016YFB0301400)

作者(Author): 乔景振,田保红,张毅,周延军,国秀花,宋克兴

DOI: 10.13289/j.issn.1009-6264.2017-0466

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