碳对GH4199合金组织及拉伸性能的影响  

Effects of carbon content on microstructures and room-temperature tensile properties of superalloy GH4199

作　　者：张玉锁[1] 吕俊英[1] 杨洪才[1] 蒙肇斌[2] 王延庆[2] 

机构地区：[1]东北大学材料与冶金学院,辽宁沈阳110004 [2]北京钢铁研究总院高温材料所,北京100081

出　　处：《材料与冶金学报》2002年第3期209-211,225,共4页Journal of Materials and Metallurgy

基　　金：十五专项 (冶No 0 0 5 0 390B)

摘　　要：采用金相显微镜和扫描电镜研究了不同碳含量的GH4 1 99合金的显微组织 ,采用拉伸实验测定了合金的室温拉伸性能 ,研究了碳含量对显微组织及拉伸性能的影响 .结果表明 ,调整碳含量明显改变合金的晶粒度及碳化物的形状和类型 ,影响合金的室温拉伸性能 ;合适的碳含量可以阻止晶粒度长大 ,并且形成类球状的碳化物 ,有利于合金的强度。Effects of the carbon content on microstructures and room-temperature tensile properties of GH4199 were investigated. The results show that changes of carbon content in the alloy can obviously affect the grain size ,the shape and types of carbides as well as the room-temperature tensile properties of the alloy; appropriate carbon content may not only prevent the grain growth, but also makes it easy to form spherical carbides that are benefitial to the strength and ductility of the alloy.

关 键 词：GH4199合金 碳化物 拉伸性能 镍基高温合金 

分 类 号：TG146.15[一般工业技术—材料科学与工程] TG1[金属学及工艺—金属材料]