SURFACE GRAIN COARSENING AND SURFACE SOFTENING DURING MACHINING OF ULTRA-FINE GRAINED TITANIUM

被引：1
|
作者：
Symonova, A. A. [1 ]
Verezub, O. N. [2 ]
Sycheva, A. A. [3 ,4 ]
Verezub, N. V. [1 ]
Havin, V. L. [1 ]
Kaptay, G. [4 ,5 ]
机构：
[1] Natl Tech Univ, Dept Integrated Technol Mech Engn, Kharkov Polytech Inst, Kharkov, Ukraine
[2] Univ Miskolc, Dept Prod Engn, Miskolc, Hungary
[3] Univ Miskolc, Hungarian Acad Sci, Mat Sci Res Grp, Miskolc, Hungary
[4] Univ Miskolc, Dept Nanotechnol, Miskolc, Hungary
[5] Bay Zoltan Appl Res Nonprofit Ltd, Miskolc, Hungary
来源：
JOURNAL OF MINING AND METALLURGY SECTION B-METALLURGY | 2012年 / 48卷 / 03期
关键词：
Machining; Ultrafine grained metal; Pure titanium; Surface grain coarsening; Microhardness; Softening;
D O I：
10.2298/JMMB121109056S
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Experiments are run to show that different machining conditions applied to ultra-fine grained pure titanium lead to different levels of grain coarsening and softening near the machined surface. Under "hard" machining conditions the upper 40 microns of the machined surface are altered with a decreased microhardness. The experimental results are reasonably reproduced by model calculations. Expanding the parameter field of the model calculations, the surface coarsening diagram and the surface softening diagram due to machining are presented, showing the region of technological parameters, under which neither grain coarsening nor softening takes place along the machined surface.
引用
收藏
页码：449 / 459
页数：11
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