张丽娜,王璞,董建新,张麦仓,郑磊,张义文

• 1:北京科技大学材料科学与工程学院
• 2:安泰科技股份有限公司
• 3:钢铁研究总院高温材料研究院

摘要(Abstract)：

采用场发射电镜观察了FGH97合金经过不同时效温度和时效时间后不同形态γ'相的演化规律。结果表明:不同温度下一次γ'相和二次γ'相平均尺寸随时效时间的增加存在最大值,三次γ'相平均尺寸随时效时间延长呈线性增长;550℃时效后二次γ'相由立方形长大为不规则形,分裂成为田字花瓣形或蝶形,而后沿<100>方向分解为小立方形;在750℃时效后期,二次γ'相出现边界融合现象,且小三次γ'相消失。时效后硬度值的变化与γ'相尺寸有关。

关键词(KeyWords)： FGH97合金;长期时效;析出相

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 张丽娜,王璞,董建新,张麦仓,郑磊,张义文

DOI: 10.13289/j.issn.1009-6264.2012.12.007

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