Effect of boron on the microstructure and mechanical properties of as-cast TiAl alloy

Acta Metall Sin

2007, Vol. 43

Issue (5): 487-492 DOI:

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Effect of boron on the microstructure and mechanical properties of as-cast TiAl alloy

中国科学院金属研究所

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. Effect of boron on the microstructure and mechanical properties of as-cast TiAl alloy. Acta Metall Sin, 2007, 43(5): 487-492 .

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Abstract Effect of boron on the microstructue and mechanical properties of as-cast Ti-46.5Al-8Nb alloy has been studied. It has been found that boron can refine TiAl grain size and coarsen interlamellar spacing. The interlamellar spacing () shows linearity relationship with grain size d-1/2. The Ultimate tensile strength (UTS) shows Hall-Petch dependences on grain size.

Key words: TiAl alloys Boron Microstructure Mechanical properties

Received: 20 September 2006

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y2007/V43/I5/487

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