中南大学学报（自然科学版）2012，Vol.43Issue(7)：2513-2519,7.
磁场淬火处理对硬质合金组织和性能的影响
Effect of magnetic quenching on performance and structure of cemented carbides
摘要
Abstract
The effects of magnetic quenching on the performance and structure of YG6 (WC-6%Co) and YN6 (WC-6%Ni) cemented carbides were studied using powder X-ray diffraction, scanning electron microscope, optical microscope, transverse rupture strength, Vickers hardness and coervice force tests. The research conditions are: samples are held at (1 100±5) ℃ for 20-25 min, magnetic quenched for 15 min with 2 T intensity, then annealed at temperature (500±5) ℃ for 3 h. Conventional quenching treatment with YG6 (WC-6%Co) was also conducted. The results show that after magnetic quenching, Vickers hardness of YG6 increases by 3%, transverse rupture strength increases by 18%, impact toughness increases by 24%, cocrvice force increases by 25%; while transverse rupture strength of YN6 increases by 5.9%, impact toughness increases by 6.9%, and there is no significant change in Vickers hardness and coervice force of YN6. The content of α-Co in WC-Co alloy increases, solid solubility of W and C increases and the degree of the rounding of the edges and corners of carbide crystals tends to increase after magnetic quenching; and WC presenting serration feature while deflecting to ordered direction is the main reason for performance improving.关键词
硬质合金/磁场淬火/回火/磁化形变Key words
cemented carbide/magnetic quenching/annealing/magnetizing deformation分类
矿业与冶金引用本文复制引用
李荐,郭欣,姚建军,周宏明,杨俊,江彬彬..磁场淬火处理对硬质合金组织和性能的影响[J].中南大学学报（自然科学版）,2012,43(7):2513-2519,7.基金项目
国家科技支撑计划项目 (2009BAE71B04) （2009BAE71B04）
粉末冶金国家重点实验室开放课题资助项目(2008112006) （2008112006）
