Indentation creep behaviour of the magnesium AZ61-0.7Si-xBi cast alloys

Sadeghi H.; Geranmayeh A. R.

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Indentation creep behaviour of the magnesium AZ61-0.7Si-xBi cast alloys

机译：Indentation creep behaviour of the magnesium AZ61-0.7Si-xBi cast alloys

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Creep behaviour of the AZ61-0.7Si-xBi cast magnesium alloys were studied by Vickers indentation testing under constant load of 5 N in the temperature range of 423-523 K. The results indicate that increasing Bi content improved the creep resistance at all test temperatures. This was caused by the higher volume fraction of the thermally stable Mg3Bi2 intermetallic particles, as the principal strengthening cause, which compensated the possible effects of the lower amount of the Mg2Si particles. According to the obtained stress exponents of about 6.7 and activation energies in the range of 84.6-88.1 kJ mol(-1), dislocation pipe diffusion was suggested as the dominant creep mechanism.

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《Materials Science and Technology: MST: A publication of the Institute of Metals》 |2022年第16期|1195-1205|共11页
作者
Sadeghi H.; Geranmayeh A. R.;
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作者单位

Islamic Azad Univ;

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原文格式 PDF
正文语种英语
中图分类工程材料学;
关键词
AZ61 Mg alloy; Bi addition; indentation creep; creep mechanism; IMPRESSION CREEP; MECHANICAL-PROPERTIES; DEFORMATION-BEHAVIOR; MG2SI MORPHOLOGY; SI ALLOYS; MICROSTRUCTURE; ADDITIONS; SB; SN;

Indentation creep behaviour of the magnesium AZ61-0.7Si-xBi cast alloys

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