Surface work-hardening experiment of titanium alloy Ti-6Al-4V turning

被引：0

作者：

Zhang, Wei ^{[1
,2
]}

Zheng, Minli ^{[1
]}

Xu, Jinhui ^{[1
]}

Cheng, Xiaoliang ^{[1
]}

机构：

[1] College of Mechanical and Power Engineering, Harbin University of Science and Technology, Harbin 150080, China

[2] Measurement-Control Technology and Instrument Key Lab. of Universities in Heilongjiang Province, Harbin University of Science and Technology, Harbin 150080, China

来源：

Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2013年 / 34卷 / 08期

关键词：

Cutting - Titanium alloys - Strain hardening - Ternary alloys - Aluminum alloys - Turning;

D O I：

10.3969/j.issn.1006-7043.201211021

中图分类号：

学科分类号：

摘要：

According to surface work-hardening problem of alloy Ti-6Al-4V, by surface micro-hardness and microcosmic structure testing experiment on titanium alloy Ti-6Al-4V under different cutting parameters, surface work-hardening mechanism of titanium alloy Ti-6Al-4V turning is explored, and the impacting rules of cutting parameters on surface work-hardening and surface metamorphic layer are analyzed. The results show that titanium alloy Ti-6Al-4V surface layer microstructure changes significantly during the turning processing. However, the increasing of cutting speed does not aggravate surface work-hardening degree and makes for reducing surface degenerating layer thickness. In addition, cutting heat significantly influence surface work-hardening, the raising of cutting temperature weakens strain hardening function which is created by surface layer material deformation. Micro-hardness of surface metamorphic layer is lower than subsurface, but higher than substrate.

引用

页码：1052 / 1056

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