摘要
WC的塑性变形对提高硬质合金的韧性有重要作用,孪生是WC塑性变形的重要方式之一。通过对硬质合金试样施加一定应力,使之产生应变,对其微观组织进行TEM分析,研究了孪生变形特性。结果表明,当WC为单一相时,WC相能产生孪生-滑移协调变形,从而使该合金具有较高的韧性。在矿山凿岩领域,这种高韧性合金显现出较好的使用性能。
The plastic deformation in tungsten carbide plays an important role in the improvement of toughness of cemented carbide. Twining is one of typical ways of plastic deformation. The microstructure and twin deformation proporties of WC phases were investigated by loading alloy specimen. The results show that when WC phase is pure phase, it can generate twin-slip coordination deformation, thus the alloy exhibits higher toughness. And this kind of alloy is possessed of excellent properties during operation, especially in the fields of rock drilling.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2006年第12期1888-1891,共4页
Rare Metal Materials and Engineering
基金
机械传动国家重点实验室访问学者资助项目(2003(5-3))
关键词
硬质合金
塑性变形
孪生变形
WC相
cemented carbide
plastic deformation
twin deformation
WC phase
