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Research on Microstructure and Properties of Al-Mn Alloy

Xiang Liu, Liu Bing

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Abstract

Microstructure and mechanics properties of the Al-Mn alloy under different thermal treatment were researched.Research results show that the microstructure of alloy is AlMn6 和Al11Mn4 distributing on a solid basement.With increasing content of Mn,the precipitations increase,and grains become bulky.When the content of Mn is within the range of 0.90%～2.15%,the strength of alloy increases along the content of Mn increaseing.After the content above 2.15%,with the increase of Mn content,the strength decreases.The Al-Mn alloy hardness increases,and its plasticity and toughness decrease,with the increase of Mn content.Al-Mn alloy cannot be intensified by thermal treatment.

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What this paper is about

Microstructure and mechanics properties of the Al-Mn alloy under different thermal treatment were researched.Research results show that the microstructure of alloy is AlMn6 和Al11Mn4 distributing on a solid basement.With increasing content of Mn,the precipitations increase,and grains become bulky.When the content of Mn is within the range of 0.90%～2.15%,the strength of alloy increases along the content of Mn increaseing.After the content above 2.15%,with the increase of Mn content,the strength decreases.The Al-Mn alloy hardness increases,and its plasticity and toughness decrease,with the increase of Mn content.Al-Mn alloy cannot be intensified by thermal treatment.

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Available abstract

Microstructure and mechanics properties of the Al-Mn alloy under different thermal treatment were researched.Research results show that the microstructure of alloy is AlMn6 和Al11Mn4 distributing on a solid basement.With increasing content of Mn,the precipitations increase,and grains become bulky.When the content of Mn is within the range of 0.90%～2.15%,the strength of alloy increases along the content of Mn increaseing.After the content above 2.15%,with the increase of Mn content,the strength decreases.The Al-Mn alloy hardness increases,and its plasticity and toughness decrease,with the increase of Mn content.Al-Mn alloy cannot be intensified by thermal treatment.

Key concepts: Alloy, Microstructure, Materials science, Metallurgy, Toughness, Content (measure theory), Mathematics, Mathematical analysis

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