TF1抗燃烧钛合金热处理工艺研究  

Heat Treatment Process of TF1 Combust-Resistant Titanium Alloy

作　　者：王宝[1] 黄旭[1] 雷力明[1] 赵红霞[1] 

机构地区：[1]北京航空材料研究院钛合金研究室,北京100095

出　　处：《稀有金属》2004年第1期62-65,共4页Chinese Journal of Rare Metals

基　　金：国防"十五"重点预研项目 ( 4 13 12 0 2 0 3 0 2 )

摘　　要：TF1合金铸锭经 3次真空自耗熔炼 ,开坯锻造后轧制出Φ18mm的棒材。棒材经不同热处理制度处理后 ,测定了主要力学性能 ,并应用光学显微镜、TEM、X射线衍射等方法分析了其相结构及相组成。认为TF1合金是以β相为基体组织的合金 ,在等轴β晶粒边界和晶粒内部分布着大量的颗粒 ,其体积百分比约占 3 %～ 4%,进一步分析为TiC颗粒相和细小的α相。经过热处理制度对力学性能 ,特别是蠕变性能影响的对比研究 ,发现热处理制度对拉伸性能影响不大 ,而细小、弥散分布的析出相提高了合金的蠕变性能。The casting ingot of TF1 combust resistant titanium alloy was melted through three vacuum arc furnaces, and then it was forged and rolled to Φ18 mm bar. The main mechanic properties of TF1 alloy were measured at different heat treatment processes, and then were observed by the optical microscope, SEM and TEM. The heat treatment process of TF1 alloy was investingated, and the microstructure and phases constituent of TF1 were analyzed. The data show that the matrix is β phase, with homogeneously distributed TiC particles and α phase. The fine precipitated phases improves the creep resistant property of TF1. It is concluded that the mechanical properties are improved in creep resistant property mainly by fine and dispersive precipitates.

关 键 词：抗燃烧钛合金 热处理工艺 Α相 蠕变性能 

分 类 号：TG146.23[一般工业技术—材料科学与工程] TG132[金属学及工艺—金属材料]