High Power Laser Powder Deposition Repair of AISI 4340 Steel in Aircraft Applications

被引：0

作者：

Sun Shi-da ^{[1
]}

Reza, Mohammed D. ^{[1
]}

Liu Qian-chu ^{[2
]}

Madabhushi, Janardhana ^{[3
]}

Milan, Brandt ^{[1
]}

Graham, Clark ^{[1
]}

机构：

[1] RMIT Univ, Sch Aerosp Mech & Mfg Engn, Bundoora, Vic 3083, Australia

[2] Def Sci Technol Org, Air Vehicles Div, Fishermans Bend, Vic 3207, Australia

[3] Directorate Gen Tech Airworthiness, Aircraft Struct Integr Sect, Laverton, Vic 3027, Australia

来源：

JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL | 2011年 / 18卷

关键词：

laser powder deposition; high strength steel; fiber laser; microstructure; hardness;

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

High power laser powder deposition (LPD) has been used to investigate the potential of repairing damaged aero-grade high strength steel. Metallurgical analysis was performed to analyze the integrity of the clad layer. A 4kW fiber laser was used to deposit two separate alloys (AISI 4340 and AISI 420 stainless steel) on an AISI 4340 steel substrate and metallurgical analysis was performed to analyze the integrity of the clad layer. No microcracks was observed on the clads, but porosity and high dilution was observed on most clads. However, microstructural analysis showed a crack and porosity free clad layer with low dilution can be achieved for some laser conditions.

引用

页码：447 / 451

页数：5

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