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Study on Structural Evolution and Mechanical Properties of High Cr Ferritic Heat-resistant Steel in Ageing Process
Author(s): 
Pages: 6-10,29
Year: Issue:  11
Journal: Guangdong Electric Power

Abstract: 研究了高Cr铁素体耐热钢时效过程中的组织演变与力学性能.600℃时效后(最长至3 000 h),高Cr铁素体耐热钢在室温和600℃下的拉伸强度随时效时间基本不变;增加耐热钢中的W含量可以提高时效前后的600℃高温拉伸强度,添加Co则无显著影响;耐热钢的室温冲击功在500 h的短时时效后快速降低,随后逐渐趋于稳定,加Co可以提高该水平;Laves相的形成是耐热钢冲击功快速降低的主要原因,其向晶界的聚...
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