Process mapping of laser surface modification of AISI 316L stainless steel for biomedical applications

被引：19

作者：

Chikarakara, Evans ^{[1
]}

Naher, Sumsun ^{[1
]}

Brabazon, Dermot ^{[1
]}

机构：

[1] Dublin City Univ, Mat Proc Res Ctr, Dublin 9, Ireland

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2010年 / 101卷 / 02期

关键词：

ROUGHNESS; TITANIUM;

D O I：

10.1007/s00339-010-5843-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A 1.5-kW CO(2) laser in pulsed mode at 3 kHz was used to investigate the effects of varied laser process parameters and resulting morphology of AISI 316L stainless steel. Irradiance and residence time were varied between 7.9 to 23.6 MW/cm(2) and 50 to 167 mu s, respectively. A strong correlation between irradiance, residence time, depth of processing and roughness of processed steel was established. The high depth of altered microstructure and increased roughness were linked to higher levels of both irradiance and residence times. Energy fluence and surface temperature models were used to predict levels of melting occurring on the surface through the analysis of roughness and depth of the region processed. Microstructural images captured by the SEM revealed significant grain structure changes at higher irradiances, but due to increased residence times, limited to the laser in use, the hardness values were not improved.

引用

页码：367 / 371

页数：5

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