GH4169渗氮层形貌特征及结构的初步探讨  

Discussions on Features and Structure of GH4169 Nitrided Layer

作　　者：郜焱[1] 胡立刚[1] 刘春兰[1] 

机构地区：[1]哈尔滨汽轮机厂有限责任公司,哈尔滨150046

出　　处：《汽轮机技术》2011年第4期308-310,共3页Turbine Technology

摘　　要：国外引进汽轮机组中的氮化阀杆材料为高温合金In718(转化国内材料牌号GH4169),通过对该材料气体氮化后随炉试样的初步检测,从而对该材料的渗氮层的形貌特征和渗层结构进行初步探讨。The nitrified valve stem of steam turbine with introduced technology is made of high-temperature alloy In718 （equivalent to material designation GH4169）. This paper discusses the features and structures of the nitiide layer of this material by preliminarily inspecting the separate test sample after gas nitriding treatment.

关 键 词：渗氮层 形貌特征 渗层结构 

分 类 号：TK265[动力工程及工程热物理—动力机械及工程]