张玉洁,杨函,朱丽慧

• 1:上海大学材料学院

摘要(Abstract)：

研究了S30432耐热钢在650℃时效时的微观组织和力学性能,特别探讨了S30432钢时效过程中析出相的变化对力学性能的影响。结果表明,实验合金时效初期ε-Cu和M23C6大量析出,随后逐渐长大,其中M23C6尺寸较大且粗化较快,但ε-Cu长期时效后尺寸依然细小。时效初期硬度升高的主要原因是ε-Cu的析出,长期时效过程中ε-Cu尺寸保持细小是硬度稳定在较高水平的主要原因。此外,时效初期由于M23C6大量析出冲击韧性急剧下降,随后M23C6的粗化是冲击韧性继续下降的主要原因。

关键词(KeyWords)： S30432耐热钢;时效;组织;力学性能;ε-Cu

Abstract:

Keywords:

基金项目(Foundation): 上海市教育委员会科研创新项目(09YZ26);; 上海大学研究生创新基金资助项目(SHUCX102231)

作者(Author): 张玉洁,杨函,朱丽慧

DOI: 10.13289/j.issn.1009-6264.2011.03.019

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