刘正东,程世长,包汉生,谭舒平

• 1:钢铁研究总院
• 2:哈尔滨锅炉厂有限责任公司

摘要(Abstract)：

利用Thermocalc热力学平衡态相计算和试验研究相结合的方法,研究了高Cr马氏体耐热钢T/P122钢中δ铁素体形成原因,结果显示化学成分和热处理对δ铁素体含量影响明显,是影响δ铁素体形成的关键因素,Cr、V等元素明显增加铬当量(Creq),Cu和C、N等元素提高镍当量(Nieq),利用经验公式,控制Creq<14.91%,Nieq>6.0%,同时热处理温度不超过1200℃,低于γ-Fe→γ-Fe+δ-Fe转变温度,能够避免钢中δ铁素体形成。

关键词(KeyWords)： 高铬;马氏体耐热钢;δ铁素体;成分;热处理

Abstract:

Keywords:

基金项目(Foundation): 国家重点基础研究发展计划(“973”计划)(2010CB630804)

作者(Author): 刘正东,程世长,包汉生,谭舒平

DOI: 10.13289/j.issn.1009-6264.2010.11.023

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