Ti-SiC composite and TiC ceramic layer formation on Ti6Al4V surface by laser alloying of pre-placed SiC coating

被引：7
作者：
Selvan, JS
Subramanian, K
Nath, AK
机构：
[1] Anna Univ, Dept Phys, Madras 600025, Tamil Nadu, India
[2] Ctr Adv Technol, Co2 Laser Grp, Indore 452013, India
来源：
ADVANCED PERFORMANCE MATERIALS | 1999年 / 6卷 / 01期
关键词：
dendrites; laser alloying; titanium carbide; titanium silicide; Ti-SiC composite; Ti-6Al-4V;
D O I：
10.1023/A:1008778013183
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The Ti-6Al-4V alloy pre-placed with SiC coating was laser alloyed using high power CO2 laser. The laser alloyed cross section shows dendrite and Ti-SiC composite layer microstructure and the respective hardness was 650-800 HV and 1500-2000 HV. The observed hardness was 2 to 7 times greater than that measured on the bulk Ti-6Al-4V substrate. The laser alloyed surface produced high temperature ceramic phases such as TiC, TiSi and Ti5Si3. The elemental analysis was qualitatively estimated using SIMS analysis.
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收藏
页码：71 / 83
页数：13
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