张海燕,张士宏,程明,赵忠

• 1:宁波工程学院机械工程学院
• 2:中国科学院金属研究所

摘要(Abstract)：

针对GH4169合金的Delta工艺,经热变形后在950~1040℃范围内进行热处理实验,研究了δ相对晶粒长大的影响规律。结果表明:δ相通过对晶界的钉扎作用可以有效地抑制晶粒长大,同时δ相发生了溶解;当温度为950℃时,其显微组织演变机制主要为静态回复;当温度高于980℃时,δ相大量溶解,其显微组织演变机制主要为晶粒长大和退火孪晶形成。因此,GH4169合金Delta工艺中需严格控制加热和变形温度在950~980℃之间。

关键词(KeyWords)： GH4169合金;Delta工艺;热处理;晶粒长大

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51505240);; 浙江省自然科学基金(LY15E050008);; 宁波市自然科学基金(2015A610068)

作者(Author): 张海燕,张士宏,程明,赵忠

DOI: 10.13289/j.issn.1009-6264.2017.03.011

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