倒双级时效对一种高强度铁镍基合金抗氢脆性能的影响  

EFFECTS OF REVERSE TWO STEP AGING ON RESISTANCE TO HYDROGEN EMBRITTLEMENT IN AN IRON-NICKEL BASED ALLOY

作　　者：李秀艳[1] 马禄铭[1] 李依依 

机构地区：[1]中国科学院金属研究所,沈阳110016

出　　处：《金属学报》2002年第6期593-596,共4页Acta Metallurgica Sinica

摘　　要：本文对一种铁镍基高强度奥氏体合金固溶处理后进行了“正、倒”两种不同条件的时效处理．研究了倒双级时效对该合金抗氢脆性能及显微组织的影响,结果表明:倒双级时效处理有利于改善实验合金的抗氢脆性能,这主要与γ'及晶界η相尺寸的减小有关．A solution treated Fe-Ni based austenitic high strength alloy was aged under positive and reverse two-step aging condition. The effects of reverse-two step aging on the resistance of the alloy to hydrogen embrittlement have been studied. The results indicate that reverse-aging can improve the resistance of the alloy to hydrogen embrittlement. TEM examination showed that it is mainly caused by the size diminution of γ' phase and η phase precipitated on grain boundaries.

关 键 词：高强度奥氏体合金 氢脆 正双级时效 倒双级时效 Η相 

分 类 号：TG142.25[一般工业技术—材料科学与工程] TG156.92[金属学及工艺—金属材料]