陈国宏,潘家栋,王家庆,刘俊建,白小龙,张建华,张涛,汤文明

• 1:安徽省电力科学研究院
• 2:合肥工业大学材料科学与工程学院

摘要(Abstract)：

针对650℃直到3000 h时效的HR3C钢,研究其显微组织的变化及对其高温拉伸力学性能的影响,探讨650℃时效HR3C钢的高温拉伸断裂机制。结果表明:高温时效过程中,晶界强化、晶内弥散强化和奥氏体基体脱溶弱化等效应导致时效HR3C钢的高温拉伸力学性能发生明显变化。时效初期(<500 h)HR3C钢高温强度变化不大;时效中期(500~1000 h)HR3C钢高温强度大幅提高,但塑性持续降低;时效后期(>1000 h),HR3C钢组织结构渐趋稳定,其强度和塑性变化不大。随时效时间延长,HR3C钢高温拉伸断裂机制由正断向剪切断转变。

关键词(KeyWords)： HR3C耐热钢;高温时效;显微组织;高温力学性能

Abstract:

Keywords:

基金项目(Foundation): 安徽省电力科学研究院技术开发基金(103-413426)

作者(Author): 陈国宏,潘家栋,王家庆,刘俊建,白小龙,张建华,张涛,汤文明

DOI: 10.13289/j.issn.1009-6264.2014.02.020

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