大尺寸钛合金易切削热氢处理技术进展与展望  

Research Progress and Prospect of Thermohydrogen Treatment for Free-cutting of Large-scale Titanium Alloy

作　　者：张旻炜[1] 高操[1] 丁月霞[2] 陶杰[1] 汪涛[1] 

机构地区：[1]南京航空航天大学材料科学与技术学院,南京210016 [2]江苏华阳金属管件有限公司,句容212400

出　　处：《材料导报》2007年第8期76-79,共4页Materials Reports

基　　金：国家自然科学基金资助项目(50502019)

摘　　要：钛合金易切削热氢处理技术是通过对钛合金进行热氢处理,改善其切削加工性能,提高机加工效率。利用该项技术可望解决航空航天用大尺寸钛合金零件的切削加工技术难题。在综述钛合金易切削热氢处理研究现状的基础上,提出了在大尺寸钛合金易切削热氢处理技术的实用化过程中需要解决的两个关键技术,即基于加工余量不同要求的氢渗层深度控制技术以及热氢处理过程中不同阻氢效率的涂层技术。Technology of thermohydrogen treatment（THT） for free-cutting of titanium alloy is able to improve the machinability and machining efficiency of titanium alloy. By means of THT, problems on machining largescale titanium alloy parts for aeronautic and astronautic applications could be solved. In this paper, based on reviewing the present research status of THT, two key techniques, depth controlling technology of the hydrogenized layer based on machining allowance and coatings with various anti-hydrogenization efficiencies during THT processing, are proposed for applying THT for free-cutting of large-scale titanium alloy parts.

关 键 词：大尺寸钛合金 易切削 热氢处理 阻氢涂层 

分 类 号：TG166.5[金属学及工艺—热处理]