王鲁,杨钢,刘正东,杨志强,汪力

• 1:钢铁研究总院特殊钢研究所
• 2:湖南人文科技学院

摘要(Abstract)：

研究了Nimonic105镍基合金的热处理工艺对合金室、高温力学性能的影响,发现只采用固溶处理(单固溶或双固溶)可有效提升Nimonic105合金的室温冲击韧性,且固溶处理后,冷速越快对合金韧性的提升越大。本文推荐Nimonic105合金的优化热处理工艺为1150℃×4 h,水冷+1065℃×2 h,水冷。结合力学性能和相分析结果可知,Nimonic105合金的γ'相可提高室、高温屈服强度;M23C6相仅能提高Nimonic105合金的高温抗拉强度和高温塑性,对Nimonic105合金的室温抗拉强度和室、高温屈服强度的影响不大,而且晶界大量析出的M23C6相是Nimonic105合金冲击韧性下降的主要原因。只进行双固溶处理后可获得12%的γ'相和2.5%的M23C6相,使得Nimonic105合金具有较好的室、高温强度和塑性,同时保证了其冲击韧性仍处于较高的水平。

关键词(KeyWords)： Nimonic105镍基合金;热处理;韧性;工艺优化

Abstract:

Keywords:

基金项目(Foundation): 国家“863”项目(2012AA03A502)

作者(Author): 王鲁,杨钢,刘正东,杨志强,汪力

DOI: 10.13289/j.issn.1009-6264.2016.09.012

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