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

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.

关键词： laser powder deposition high strength steel fiber laser microstructure hardness

作者: SUN ShiDa MOHAMMED Reza D LIU Qianchu JANARDHANA Madabhushi BRANDT Milan CLARK Graham

作者单位: School of Aerospace, Mechanical,and Manufacturing Engineering, RMIT University,Bundoora 3083,Victori Air Vehicles Division, Defence Science Technology Organisation,Fisherman’s Bend 3207,Victoria, Austr Aircraft Structural Integrity Section, Directorate General Technical Airworthiness, RAAF,Laverton 30

会议类型: 国际会议

会议名称: The 6th International Conference on High Strength Low Alloy Steels(第六届高强度低合金钢国际会议HSLA Steels2011)

会议地点: 北京

会议语种:英文

页码: 242-245

在线出版日期: 2011-05-31（万方平台首次上网日期，不代表论文的发表时间）