Comparative Study of Surface Contaminated Layer on Titanium Aluminum Alloy and Titanium Alloy Investment Castings

Zhi Hua Feng; Xian Fei Ding; Xin Feng; Hai Nan; Ai Bin Zhang

doi:10.4028/www.scientific.net/MSF.1035.602

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HomeMaterials Science ForumMaterials Science Forum Vol. 1035Comparative Study of Surface Contaminated Layer on...

Comparative Study of Surface Contaminated Layer on Titanium Aluminum Alloy and Titanium Alloy Investment Castings

Abstract:

A comparative study of the surface contaminated layer formed by chemical reaction between ceramic-mold and titanium aluminum alloy castings or titanium alloy castings were carried out. The morphology, thickness and hardness of the surface contaminated layer were characterized by means of metalloscopy and microhardness measurement. The results show that surface contaminated layers formed between Ti-Al alloy castings and ceramic-mold, also formed between Ti alloy castings and ceramic-mold. The surface contaminated layers of Ti-Al alloy castings were continuous and compact, their thickness was about 0~90 μm. The surface contaminated layers of titanium alloy castings were not even, their thickness was 0~900 μm. Titanium alloy is more liable to react with the ceramic -mold than the Ti-Al alloy.

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Periodical:

Materials Science Forum (Volume 1035)

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602-607

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.1035.602

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Online since:

June 2021

Authors:

Zhi Hua Feng*, Xian Fei Ding, Xin Feng, Hai Nan, Ai Bin Zhang

Keywords:

Contaminated Layer, Interface Reaction, Investment Casting, Titanium Alloy, Titanium Aluminum Alloy

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