钛合金电火花表面渗碳研究  

Research of Surface Carburizing on Titanium Alloys by Electrospark Deposition

作　　者：游涛[1] 黄大伟[2] 刘时兵[1] 刘宏宇[1] 张春辉[1] 苏贵桥[1] 王茂才[3] 

机构地区：[1]沈阳铸造研究所,辽宁沈阳110022 [2]辽河油田油气集输公司,辽宁盘锦124010 [3]中国科学院金属研究所,辽宁沈阳110016

出　　处：《铸造》2007年第3期239-241,共3页Foundry

摘　　要：用电火花渗碳技术可在钛合金表面形成一层40～50μm厚的渗碳层,分析显示渗碳层中主要是由石墨电极与基体反应生成的TiC相组成。渗碳层与基体之间没有明显的界面,组织和成分过渡均匀。TA2合金渗碳层的显微硬度最高可达2000HV0.05,是基体的5～7倍;整个渗层截面的硬度呈梯度分布。It can make carburized layer on titanium carbudzed depth is about 40-50 μm. The carburized during the reaction between graphite electrode and alloys by electrospark deposition, and the layer is comprised of TiC which is produced titanium matrix. There is no clear interface between carburized layer and matrix, and the transition of structure and component are homogeneous. The microhardness of the carburized layer of TA2 alloy is up to 2000HV0.05. Comparing to base, the microhardness of the carburized layer is as 5~7 times as that of base. And the microhardness of the carburized layer is graded distributing.

关 键 词：钛合金 电火花 渗碳 TIC 硬度 

分 类 号：TG156.81[金属学及工艺—热处理] TG174.445[金属学及工艺—金属学]