MICRO-STRUCTURES OF HARD COATINGS DEPOSITED ON TITANIUM ALLOYS BY LASER ALLOYING TECHNIQUE

Wei Li, Huijun Yu, Chuanzhong Chen (), Diangang Wang and Fei Weng
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Wei Li: Key Laboratory for Liquid–Solid Structural Evolution, and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan 250061, China
Huijun Yu: School of Mechanical Engineering, Shandong University, Jinan 250061, China
Chuanzhong Chen: Key Laboratory for Liquid–Solid Structural Evolution, and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan 250061, China
Diangang Wang: Key Laboratory for Liquid–Solid Structural Evolution, and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan 250061, China
Fei Weng: Key Laboratory for Liquid–Solid Structural Evolution, and Processing of Materials (Ministry of Education), School of Materials Science and Engineering, Shandong University, Jinan 250061, China

Surface Review and Letters (SRL), 2013, vol. 20, issue 01, 1-6

Abstract: This work is based on micro-structural performance of theTi–B4C–Claser alloying coatings onTi–6Al–4Vtitanium alloy. The test results indicated that laser alloying of theTi–B4C–Cpre-placed powders on theTi–6Al–4Valloy substrate can form the ceramics reinforced hard alloying coatings, which increased the micro-hardness and wear resistance of substrate. The test result also indicated that theTiBphase was produced in alloying coating, which corresponded to its (101) crystal plane. In addition, yttria has a refining effect on micro-structures of the laser alloying coating, and its refinement mechanism was analyzed. This research provided essential experimental and theoretical basis to promote the applications of the laser alloying technique in manufacturing and repairing of the aerospace parts.

Keywords: Laser alloying technique; surfaces; titanium alloys (search for similar items in EconPapers)
Date: 2013
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DOI: 10.1142/S0218625X13500078

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