GH2036合金盘坯亮斑问题及解决方法研究  

Research On Bright Spots of GH2036 Alloy Disc Billet and Its Solution Method

作　　者：高首磊 何云华[1] 罗通伟[1] 

机构地区：[1]攀钢集团江油长城特殊钢有限公司技术中心,四川江油621700

出　　处：《特钢技术》2015年第2期27-29,33,共4页Special Steel Technology

摘　　要：针对GH2036合金盘坯低倍亮斑问题,论文从亮斑部位的高倍、低倍入手,通过扫描电镜和能谱分析,得出亮斑主要是是富Cr、V和Nb等的碳化物。为了消除此类偏析,采取了增加高于1 200℃的高温道次锻造的方法,使碳化物先溶解再弥散析出的方法,成功解决了GH2036亮斑问题。Focusing on the bright spots occurred in the macrostructure of GH2036 disc billet, through the metallo?graphic structure and SEM\EDS analysis,it is concluded that the bright spots are mainly some Cr-rich(and/or V, Nb, etc.) carbides . In order to eliminate this type of segregation,by adding a new forging method with high forging tempera?ture (above 1200℃) to make the carbides dissolved at first and then dispersion precipitated , the problem about bright spots of GH2036 alloy disc billet is solved successfully.

关 键 词：GH2036 碳化物偏析 高温锻造 

分 类 号：TG316[金属学及工艺—金属压力加工]