喷丸强化对TC4-DT钛合金组织性能的影响  

Effect of Shot Peening Strengthening on Microstructure and Properties of TC4-DT Titanium Alloy

作　　者：冯宝香[1,2] 毛小南[2] 杨冠军[2] 于兰兰[2] 

机构地区：[1]西安建筑科技大学冶金学院,陕西西安710055 [2]西北有色金属研究院钛合金研究所,陕西西安710016

出　　处：《热加工工艺》2009年第4期5-8,共4页Hot Working Technology

基　　金：国家973计划资助项目(2007CB613807)

摘　　要：研究了喷丸强化对TC4-DT钛合金材料组织的强化效果;采用金相显微镜、扫描电镜和透射电镜分析材料喷丸强化层。分析研究了喷丸强化处理前后的显微硬度和表面粗糙度。结果表明,随喷丸强度增大,材料表面塑性变形程度增大,喷丸强化表层有大量高密度位错和变形带;硬度和粗糙度都随喷丸强度的增加而增大。The characterization of structure strengthening of different shot peening process for TC4-DT titanium alloys was studied. The surface layer of shot peening strengthening was analyzed with OM, SEM and TEM. The microhardness and surface roughness of specimens before and after shot peening was studied and analysed. The results show that the plastic deformation of material increases with the shot peening intensity increasing. High density dislocation and deformation band in material surface layer is produced by shot peening treatment. The microhardness and surface roughness increase with the shot peening intensity increase.

关 键 词：喷丸强化 TC4-DT 位错 

分 类 号：TG146.23[一般工业技术—材料科学与工程]