Laser cladding of Si on austenitic stainless steel

被引：17

作者：

Jagdheesh, R ^{[1
]}

Mudali, UK

Sastikumar, D

Nath, AK

机构：

[1] Natl Inst Technol, Dept Phys, Tiruchirappalli 620015, Tamil Nadu, India

[2] Indira Gandhi Ctr Atom Res, Kalpakkam 603102, Tamil Nadu, India

[3] Ctr Adv Technol, Indore 452013, India

来源：

SURFACE ENGINEERING | 2005年 / 21卷 / 02期

关键词：

surface treatment; austenitic stainless steel; CO2; laser; laser cladding; Si; microstructure; columnar dendrites; cellular; delta-ferrite; gamma-austenite SEM; EDS; microchemistry; EPMA; microhardness;

D O I：

10.1179/174329405X40885

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Laser processed Si coatings with thickness in the range 100-150 mu m were produced on AISI type 316L stainless steel substrate using a continuous wave CO2 laser. The experiments were done at a laser power between 1.5 kW and 1 kW, process speeds in the range 33.6-8.3 mm s(-1), with a beam diameter of 1.6 mm. The microstructure of the laser processed coating consists of columnar dendrites and fine cellular structures. High temperature phases such as delta-ferrite and gamma-austenite were found on the resolidified microstructure. The microanalysis technique demonstrated that the laser clad zone possessed a high concentration of Si. The crack free laser clad zone exhibited high hardness in the range 850-900 HV.

引用

页码：113 / 118

页数：6

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