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Effect of quenching temperature on the microstructure and mechanical properties of Fe–B–Ti alloy

  • Fu Hanguang , Yan Lifen , Jiang Zhiqiang and Xing Jiandong
Published/Copyright: May 23, 2013
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Abstract

The effects of quenching temperature on the microstructure and mechanical properties of a cast Fe – B – Ti alloy containing 2.0 wt.% of boron and 1.0 wt.% of titanium were investigated. No clear influence on microstructure has been observed unless the quenching temperature is above 900 °C. As the quenching temperature exceeds 950 °C, most of the boride networks are broken and a large quantity of irregular borides appears. When the quenching temperature reaches 1050 °C, the networks disappear completely. The mechanical properties of the cast Fe – B – Ti alloy begin to improve when the quenching temperature increases. The hardness, impact toughness and bend strength have no obvious change when the quenching temperature exceeds 1000 °C. The cast Fe – B – Ti alloy quenching at 1000 °C has excellent comprehensive mechanical properties, its hardness, bend strength and impact toughness are 58.3 HRC, 2.39 GPa, 17.5 J cm−2 respectively.


* Correspondence address, Dr. Fu Hanguang, School of Materials Science and Engineering, Xi'an Jiaotong University, 28 Xianning West Road, Xi'an, Shaanxi Province 710049, P.R. China, E-mail:

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Received: 2006-6-3
Accepted: 2007-2-23
Published Online: 2013-05-23
Published in Print: 2007-06-01

© 2007, Carl Hanser Verlag, München

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