二步烧结法对钨基高密度合金组织及性能的影响  

Influence of Two-stage Sintering Process on Microstructure and Properties of Heavy Tungsten Alloy

作　　者：李先容[1] 高翔[1] 徐俊[1] 杨少青[1] 汪彩芬[1] 李强[1] 

机构地区：[1]中国工程物理研究院,四川绵阳621900

出　　处：《稀有金属与硬质合金》2015年第2期22-24,63,共4页Rare Metals and Cemented Carbides

摘　　要：采用直接液相烧结法和二步烧结法(固相烧结+液相烧结)制备了93W-4.55Ni-1.95Fe-0.5Co钨基高密度合金,研究了其性能和显微组织。结果表明,二步烧结法可以控制合金的烧结变形,且有利于钨颗粒与粘结相的均匀分布,合金的力学性能尤其是塑韧性大大提高。The heavy tungsten alloy of 93W-4.55Ni-1.95Fe-0.5Co was prepared by direct liquid phase sintering process and two-stage sintering process(i.e.solid-state sintering at first and then liquid phase sintering)and its microstructure and properties were investigated.The results show that sintering distortion of the alloy can be controlled by using two-stage sintering process,the distribution of tungsten grain and binder phase is more homogeneous,and the mechanical properties especially ductility and toughness are improved to a great extent.

关 键 词：钨基高密度合金 二步烧结法 力学性能 微观组织 

分 类 号：TG146.411[一般工业技术—材料科学与工程] TF124.5[金属学及工艺—金属材料]