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Journal of Shanghai University >

2019 , Vol. 25 >Issue 2: 206 - 214

DOI: https://doi.org/10.12066/j.issn.1007-2861.1915

Research Articles

Effects of environment on mechanical properties of Al$_{\textbf{0.1}}$CoCrFeNi alloy

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  • Institute of Materials, Shanghai University, Shanghai 200072, China

Received date: 2017-04-14

  Online published: 2019-05-05

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Abstract

Effects of the environment on mechanical properties of Al$_{0.1}$CoCrFeNi alloy when tested in vacuum, air and gaseous hydrogen at different pressures were investigated. The result shows that a few hydrogen atoms can significantly improve elongation of the Al$_{0.1}$CoCrFeNi alloy when tested in air and gaseous hydrogen. The elongation of Al$_{0.1}$CoCrFeNi alloy increases with the increase of pressure of gaseous hydrogen. The increase rate of elongation becomes slower when the pressure of gaseous hydrogen is more than 0.010 MPa. Fractographs of Al$_{0.1}$CoCrFeNi alloy exhibits all transgranular fracture patterns. Some micro-voids exist on the fractograph surfaces when tensile test is performed in three environments.

Key words： Al$_{0.1}$CoCrFeNi alloy; tensile properties; environmental effect

Cite this article

QIANG Xiaoni, CHEN Yexin, ZHANG Jiantao . Effects of environment on mechanical properties of Al$_{\textbf{0.1}}$CoCrFeNi alloy[J]. Journal of Shanghai University, 2019 , 25(2) : 206 -214 . DOI: 10.12066/j.issn.1007-2861.1915

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