摘要
硬质合金中WC晶粒度的统计随其尺寸的降低，难度大幅升高。本文作者在多次实验的基础上，成功地将电子背散射衍射（EBSD）技术应用于超细WC-Co硬质合金WC晶粒尺寸统计。以样品A合金（晶粒度约0．2～0．4μm）为例，应用EBSD统计其平均晶粒尺寸为0．36gm的同时，还与其他晶粒度统计方法进行对比分析。另外，取样品B（晶粒度约0．1-0．3μm），经两种不同的烧结工艺烧结后分别进行EBSD分析，对比分析烧结温度对超细WC品粒长大的影响。
As the WC grain size of cemented carbide decreasing, the WC grain size statistic becomes rather more difficult. Relying on a lots experiment, the authors succeeded in applying EBSD technology for WC grain size statistic of superfine WC-Co cemented carbide material For sample A （with practical grain size of 0.2-0.4 μm）, the average grain size was determined as 0.36 pan by EBSD. At the same time, several other grain size statistic methods were used to compare and analysis. Besides, sample B （with finer WC grains of 0.1-0.3 μm） was processed in two different sintering temperatures; and the effect of temperature on superfine WC grain growth was also explored.
出处
《粉末冶金材料科学与工程》
EI
北大核心
2015年第2期162-167,共6页
Materials Science and Engineering of Powder Metallurgy
基金
"高档数控机床与基础制造装备"科技重大专项(2013ZX04009031)
