铸造技术2017，Vol.38Issue(7)：1670-1673,4.DOI:10.16410/j.issn1000-8365.2017.07.038
烧结温度对WC-14TiC-8Co超细硬质合金组织和性能的影响
Effects of Sintering Temperature on Microstructure and Properties of WC-14TiC-8Co Ultrafine Cemented Carbide
摘要
Abstract
The WC-14TiC-8Co ultrafine cemented carbide was made by powder metallurgy process,and the effects of different sintering temperature on microstructure and properties of WC-14TiC-8Co ultrafine cemented carbide were studied.The results show that,with the increase of sintering temperature from 1 300 ℃ to 1 410 ℃,its grain size grows gradually,and the density and bending strength have the same increasing tendency,and the hardness rises first and then drops.When the sintering temperature is 1 380 ℃ and the holding time is 40 min,the best performance can be obtained.The density,bending strength and hardness are 11.49 g·cm3,1 482 MPa and 92.8 HRA,respectively,and the microstructure are WC+ (Ti,W)C+γ+η (little amount).The phenomenon of carbon-deficient in heating process is the main reason for the appearance ofη phase.关键词
超细硬质合金/烧结/显微组织/性能Key words
ultrafine cemented carbide/sintering/microstructure/property分类
矿业与冶金引用本文复制引用
陈庚,方琴,张崇才,王正云,盛智勇..烧结温度对WC-14TiC-8Co超细硬质合金组织和性能的影响[J].铸造技术,2017,38(7):1670-1673,4.基金项目
四川省教育厅资助项目(16ZB0156) （16ZB0156）
四川省科技支撑计划资助项目(2016GZ0241) （2016GZ0241）
