固溶热处理对一种镍基耐蚀合金管析出相的影响
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摘要
分析了一种镍基耐蚀合金管在3种不同固溶温度(1 020℃、1 080℃和1 130℃)条件下析出相的状态特点。分析结果表明:该镍基耐蚀合金经过900℃退火处理2 h后晶界形成大量富含Cr、Mo的σ相;经1 020℃固溶处理1 h后晶界σ相仍大量存在;在1 080℃固溶处理1 h则消除了大部分的σ相,但晶界还有少量残余;而在1 130℃固溶处理1 h后则可完全消除析出相,为保证合金管耐蚀性提供了极佳组织条件。
Studied here in the article are the status characteristics of the precipitate phases of a certain corrosionresistant nickel-based alloy tube as developed at three different solid solution temperatures,i.e.,1 020 ℃,1 080 ℃and 1 130 ℃. The analysis result shows that a large number σ phases rich in Cr and Mo got formed in the grain boundary,after the said alloy is annealed at 900 ℃ for 2 hours. And after being solid solution treatment at 1 020 ℃ for1 hour,grain boundary σ phase still remains in large quantity. Due to solid solution treatment at 1 080 ℃ for 1 hour,most of the σ phase is eliminated, but there still remains a small amount as residual in the grain boundary.Nevertheless, thanks to solid solution treatment at 1 130 ℃ for 1 hour, the residual precipitate phase is completely eliminated,thus provides excellent microstructure condition for assuring corrosion resistance of the alloy pipe.
Studied here in the article are the status characteristics of the precipitate phases of a certain corrosionresistant nickel-based alloy tube as developed at three different solid solution temperatures,i.e.,1 020 ℃,1 080 ℃and 1 130 ℃. The analysis result shows that a large number σ phases rich in Cr and Mo got formed in the grain boundary,after the said alloy is annealed at 900 ℃ for 2 hours. And after being solid solution treatment at 1 020 ℃ for1 hour,grain boundary σ phase still remains in large quantity. Due to solid solution treatment at 1 080 ℃ for 1 hour,most of the σ phase is eliminated, but there still remains a small amount as residual in the grain boundary.Nevertheless, thanks to solid solution treatment at 1 130 ℃ for 1 hour, the residual precipitate phase is completely eliminated,thus provides excellent microstructure condition for assuring corrosion resistance of the alloy pipe.
引文
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[3]李明扬,章清泉,吴会云,等.镍基耐蚀合金研究进展及其应用[J].金属材料研究,2014,40(2):6-12,56.
[4]杨瑞成,王晖,郑丽平,等.高性能镍基耐蚀合金的特性与研究动向[J].材料导报,2001,15(11):21-23.
[5]张春霞,张忠铧.G3镍基合金钝化膜的耐蚀性研究[J].宝钢技术,2008(5):35-38.
[6]赵春辉,郑飞,丁磊,等.耐蚀合金油井管的发展概况[J].钢管,2014,43(4):11-17.
[7]邓洪达,崔世华,李春福,等.镍基合金G3在高含H2S和CO2环境中的腐蚀行为[J].腐蚀与防护,2013,34(4):302-306.
[8]周鹏杰,何向明.热处理对一种镍基高温合金组织和持久性能的影响[J].热加工工艺,2013,42(2):157-160.
[9]陈长风,姜瑞景,张国安,等.镍基合金管材高温高压H2S/CO2环境中局部腐蚀研究[J].稀有金属材料与工程,2010,39(3):427-432.
[10]林毅.Incoloy028合金析出相和耐腐蚀性能研究[D].上海:上海交通大学,2012.
[11]张忠铧,杨建强,张春霞,等.镍基合金油套管的析出相及对腐蚀性能的影响[J].宝钢技术,2011(6):1-11.
[12]张丽娜,董建新,张麦仓,等.油井管用铁镍基耐蚀合金研究[J].世界钢铁,2013(1):54-63.
[13]郭岩,周荣灿,侯淑芳,等.镍基合金的析出相及强化机制[J].金属热处理,2011,36(7):46-50.
[14]冶军.美国镍基高温合金[M].北京:科学出版社,1978.
[15]黄乾尧,李汉康.高温合金[M].北京:冶金工业出版社,2000.