孙永哲,田笑,魏亚风,庄艳歆

• 1:东北大学材料电磁过程研究教育部重点实验室
• 2:东北大学材料科学与工程学院

摘要(Abstract)：

利用X射线衍射仪、光学显微镜、扫描电镜、电子背散射衍射、硬度测试和拉伸实验等手段,研究了退火温度对冷轧变形量为95%的Al_(0.3)CoCrFeNi高熵合金微观组织和力学性能的影响。结果表明:合金经过95%冷轧变形后仍保持FCC单相;冷轧变形后的合金的硬度明显提高,塑性大幅下降,强度提高了4~5倍;经过600℃以上温度退火后,合金发生再结晶;随着退火温度的升高,晶粒尺寸逐渐增大,合金强度下降,塑性提高,断口形貌由解理特征向韧窝特征转变;同时在600~800℃退火时合金中有少量第二相(BCC相)析出,温度越高,第二相析出越明显。

关键词(KeyWords)： 高熵合金;冷轧;退火;微观组织结构;力学性能

Abstract:

Keywords:

基金项目(Foundation): 辽宁省教育厅重点实验室基础研究项目(LZ2015042);; 中央高校基本科研业务费项目(N150902001)

作者(Author): 孙永哲,田笑,魏亚风,庄艳歆

DOI: 10.13289/j.issn.1009-6264.2017-0172

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