季波,沈寅忠,崔凯

• 1:上海交通大学机械与动力工程学院

摘要(Abstract)：

借助光学显微镜和透射电镜,研究了SAVE12钢的微观组织。结果表明,蠕变前后SAVE12钢组织主要为马氏体,也有少量δ-铁素体。蠕变前SAVE12钢中主要存在3种析出相,分别为富Nb的MX相,富Cr的M23C6相和富Fe的M5C2相。蠕变后部分MX相发生三点变化:Nb元素少量下降,其它金属元素少量增加;Nb元素较大下降,而Ta和W元素较大增加,变成富Ta的MX相;Nb元素较大下降,而Cr和V元素较大增加。蠕变后M23C6相化学成分基本没有变化,但析出量增加,且颗粒尺寸长大的不明显。蠕变后在δ-铁素体中有Laves相析出。

关键词(KeyWords)： SAVE12钢;显微组织;析出相;蠕变

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金重点项目(51034011)

作者(Author): 季波,沈寅忠,崔凯

DOI: 10.13289/j.issn.1009-6264.2014.01.007

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