WC含量对WC-Ni60喷焊层微观组织和硬度的影响
Effect of WC content on microstructure and hardness of WC-Ni60 spray welding coating
赵虎林 1苟藏红 1袁永峰 2曹静 2赵昕3
作者信息
- 1. 陇南师范高等专科学校,甘肃陇南 742500
- 2. 甘肃宝徽集团锌冶炼厂,甘肃陇南 742300
- 3. 甘肃省礼县石桥镇中心小学,甘肃陇南 742211
- 折叠
摘要
使用氧乙炔火焰喷焊工艺在A3钢板上制备了不同WC含量(10％、20％、30％、40％、50％)的WC-Ni60合金粉末喷焊层,通过对比分析,研究了不同WC含量对喷焊层的微观组织和硬度的影响.结果表明:喷焊后的WC-Ni60合金层与A3钢板基体结合处形成"白亮带"共晶组织,冶金结合良好;随着WC含量的增加,喷焊层的微观组织中WC颗粒逐渐增多,显微硬度也越大,喷焊层的显微硬度可达基体材料的2倍以上.但是在WC含量超过30％以后,微观组织中容易出现气孔等缺陷.
Abstract
WC-Ni60 spray welding coatings with different WC contents(10％,20％,30％,40％and 50％)were prepared on A3 steel plate by oxyacetylene flame spray welding process.Through comparative analysis,the effect of WC content on the microstructure and hardness of the spray welding layer was studied.The results show that after spray welding,a"white bright band"eutectic structure forms at the junction of the WC-Ni60 alloy coating with the A3 steel plate matrix,and the metallurgical bonding is good.With the increase of WC content,WC particles in the microstructure of the spray welding coating gradually increase,the microhardness is also higher and reaches more than 2 times of that of the base material.However,when the WC content exceeds 30％,pores and other defects are easy to appear in the microstructure.
关键词
WC-Ni60合金粉末/WC含量/火焰喷焊层/微观组织/力学性能Key words
WC-Ni60 alloy powder/WC content/flame spray welding coating/microstructure/mechanical properties引用本文复制引用
出版年
2024
NETL
NSTL
万方数据