Spark plasma sintering of Stellite®-6 superalloy

JOURNAL OF ALLOYS AND COMPOUNDS

卷:782

Article

Khouzani, M. Kiani¹  Bahrami, A.¹  Mehr, M. Yazdan² 

[1] Isfahan Univ Technol, Dept Mat Engn, Esfahan 8415683111, Iran

[2] Delft Univ Technol, Fac EEMCS, Mekelweg 4, NL-2628 CD Delft, Netherlands

关键词: Spark plasma sintering;    Stellite (R)-6 alloy;    Superalloy;    Microstructure;    Mechanical properties;   

DOI  :  10.1016/j.jallcom.2018.12.186

来源: Elsevier

【 摘 要 】

This paper aims at studying microstructure and mechanical properties of spark plasma sintered (SPSed) Stellite (R)-6 cobalt-based superalloy. SPS is a sintering technique, based on a relatively fast resistance heating using a pulsed current. Fast sintering process, associated with minimum grain growth, results in excellent mechanical properties. Samples were sintered at temperatures ranging from 950 to 1100 degrees C. Microstructure of samples were studied using scanning electron microscope (SEM), energy-dispersive X-ray spectroscope (EDS), X-Ray diffraction (XRD), and optical microscope. Hardness, impact test, as well as room and high temperature compression tests were used to evaluate the effects of sintering temperature and duration on the mechanical properties of SPSed samples. Results show that optimum mechanical properties can be obtained after sintering at 1050 degrees C for 10 min. The correlation between sintering parameters, microstructure, and mechanical properties are discussed. (C) 2018 Elsevier B.V. All rights reserved.

【 授权许可】

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