摘要
基于大量试验及生产过程中制备得到YG类硬质合金,将制备的YG类硬质合金采用金相显微镜分析,拍摄了大量金相图片,分析A、B、C类孔隙度,η相,分层,未压好,污垢,裂纹,脏化,个别异常长大WC晶粒,较多WC粗晶,WC聚集,钴池,混料,欠烧等缺陷及WC晶粒度,通过标准金相图片和拍摄金相图片的对比,可更加直观了解YG类硬质合金的缺陷。同时,将引起硬质合金的各种缺陷图片分类、汇总,并将引起各类缺陷主要原因进行整理、总结,特别是对标准金相图片未拍摄的个别异常长大WC晶粒、较多WC粗晶、WC聚集、钴池、混料、欠烧等金相图片进行分析。
YG type cemented carbide was produced after plenty of test and production preparation.The carbide was analyzed by metallographic microscope,which showed the flaws of A,B and C types of pores,η phase,layers,unpressed,dirty,crack,contamination,WC grain size unusual growth,coarse size WC,WC congregate,cobalt pool,mixing of material and un-sintered;Metallographic photos were kept to compare with the standard metallographic photos.It shows the flaws of YG type cemented carbide vividly.Meanwhile,pictures of defects of variety flaws of cemented carbide were classified,and the reasons of the defects were studied,especially those of the WC grain size unusual growth,surplus coarse size WC,WC congregate,cobalt pool,mixing of material and un-sintered metallographic photos.
作者
朱二涛
张久兴
杨新宇
羊建高
潘亚飞
ZHU Ertao;ZHANG Jiuxing;YANG Xinyu;YANG Jiangao;PAN Yafei(School of Materials Science and Engineering,Hefei University of Technology,Hefei 230009,Anhui,China;Advanced Corporation for Materials & Equipment,Changsha 410118,Hunan,China)
出处
《中国钨业》
CAS
2019年第2期50-66,共17页
China Tungsten Industry
关键词
YG类硬质合金
金相分析
缺陷
原因
YG type cemented carbide
metallography analysis
defect
cause
