杨征,赵新宝,张醒兴,党莹樱,鲁金涛,袁勇

• 1:西安热工研究院有限公司
• 2:西安益通热工技术服务有限责任公司

摘要(Abstract)：

研究S31042奥氏体耐热钢不同热处理工艺后的显微组织和力学性能。结果表明:随着时效温度由700℃上升到900℃,该钢的晶界M_(23)C_6型碳化物析出量增多,并逐渐呈现连续分布,冲击韧性显著降低,高温抗拉强度逐渐降低,屈服强度基本保持稳定,但900℃时效热处理后屈服强度略微增加;当时效温度由900℃上升到1000℃,该钢晶界碳化物析出量减少;高温抗拉强度变化不明显,屈服强度有所降低,冲击韧性提高;相比于拉伸过程中的低应变速率,在瞬时冲击高应变速率条件下,晶界M_(23)C_6相的聚集析出造成沿晶开裂倾向增加。

关键词(KeyWords)： S31042钢;热处理;显微组织;力学性能

Abstract:

Keywords:

基金项目(Foundation): 华能国际电力股份有限公司科技项目(HNKJ17-H10);; 西安热工研究院有限公司科技项目(ZD-15-TYK07)

作者(Author): 杨征,赵新宝,张醒兴,党莹樱,鲁金涛,袁勇

DOI: 10.13289/j.issn.1009-6264.2017-0431

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