Additive Manufacturing of -TiAl: Processing, Microstructure, and Properties

被引：63

作者：

Balla, Vamsi Krishna ^{[1
]}

Das, Mitun ^{[1
]}

Mohammad, Ashfaq ^{[2
]}

Al-Ahmari, Abdulrahman M. ^{[3
]}

机构：

[1] Cent Glass & Ceram Res Inst, CSIR, Bioceram & Coating Div, 196 Raja SC Mullick Rd, Kolkata 700032, India

[2] King Saud Univ, Adv Mfg Inst, Riyadh 11421, Saudi Arabia

[3] King Saud Univ, Adv Mfg Inst, Coll Engn, Dept Ind Engn, Riyadh 11421, Saudi Arabia

来源：

ADVANCED ENGINEERING MATERIALS | 2016年 / 18卷 / 07期

关键词：

TITANIUM ALUMINIDE ALLOY; MECHANICAL-PROPERTIES; CORROSION BEHAVIOR; STRUCTURAL TRANSFORMATION; TRIBOLOGICAL PERFORMANCE; INTERMETALLIC ALLOY; SLIDING WEAR; GAMMA; SOLIDIFICATION; TEMPERATURE;

D O I：

10.1002/adem.201500588

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Additive manufacturing of -TiAl intermetallic alloy using laser-engineered net shaping (LENS) is reported. The influence of laser power and scan speed on processability, microstructure, tribological, and electrochemical properties is studied. The results demonstrate that near net shape -TiAl parts can be fabricated using LENS and defect-free parts are obtained with narrow laser energy input range (40-50Jmm(-2)). The high cooling rates result in massive-like matrix with small amount of +(2) lamellar. Process parameters strongly influence tribological and electrochemical properties of LENS-processed -TiAl parts in 3.5% NaCl solution. Wear is of abrasive type with no evidence of corrosion on wear tracks.

引用

收藏

页码：1208 / 1215

页数：8

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