期刊
INTERNATIONAL JOURNAL OF MACHINE TOOLS & MANUFACTURE
卷 134, 期 -, 页码 69-78出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.ijmachtools.2018.07.001
关键词
Ti-6Al-4V alloy; Lamellar martensite; Anisotropic behaviour; CRSS; Ultraprecision rotary diamond cutting
资金
- Research Committee of The Hong Kong Polytechnic University [PolyU 152054/15E]
- State Key Laboratory of Ultra-precision Machining Technology (RUWB)
Ti-6Al-4V alloy with local anisotropic characteristics is produced by electropulsing treatment (EPT) and used in ultraprecision rotary diamond cutting to explore the deformation mechanism of the alloy. Two different orientations of lamellar martensite alpha give rise to the local anisotropic behaviour. Critical resolved shear stress (CRSS) is introduced in this paper to investigate the slip modes of the hexagonal closest packing martensite. A geometrical and physical model is also proposed for calculation of resolved shear stresses on various slipping systems. The results show that glide occurs in some certain directions on the condition that resolved shear stress equals or exceeds the CRSS. The cutting force varies with martensitic orientations, which is supposedly due to the combined effects of lamellar alpha phase sizes and the coordination or competition of diverse slipping directions.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据