Hardness, chemical, and microstructural studies for laser-fabricated metal parts of graded materials

被引：15

作者：

Kahlen, FJ ^{[1
]}

von Klitzing, A ^{[1
]}

Kar, A ^{[1
]}

机构：

[1] Univ Cent Florida, CREOL, Sch Opt,Mech Mat & Aerosp Engn Dept, Laser Aided Mfg Mat & Microproc Lab, Orlando, FL 32816 USA

来源：

JOURNAL OF LASER APPLICATIONS | 2000年 / 12卷 / 05期

关键词：

direct metal deposition; rapid manufacturing; graded materials; laser-fabricated metal parts; hardness testing; ductile metal parts; solidification; microstructure;

D O I：

10.2351/1.1309552

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Laser deposition of metal layers has been recognized, in recent years, as a one-step process to fabricate metal parts instead of the two-step process of producing a mold and then using the mold to cast a metal part. The authors have employed this one-step technique to create graded materials by varying the part's composition from 100% stainless steel to a 100% nickel-based superalloy. Mechanical properties of these graded materials are measured and the effects of slow solidification rates are investigated. A multimode CO2 laser is operated at 270 W to produce wall-like structures of graded materials. The CO2 laser beam is focused to a spot size of 600 mu m using a 127 mm focal length lens. (C) 2000 Laser Institute of America. [S1042-346X(00)00405-8].

引用

页码：205 / 209

页数：5

共 9 条

[1] FUNCTIONALLY GRADIENT TITANIUM ALUMINIDE COMPOSITES PRODUCED BY LASER CLADDING [J].