Effects of Mg and Mn Contents on Hot-Rolling Temperature and Resultant Tensile Properties of Al-Mg-Mn Alloys

Bong Hwan Kim; Ji Y. Lee; Young Ok Yoon; Shae K. Kim

doi:10.4028/www.scientific.net/MSF.877.334

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HomeMaterials Science ForumMaterials Science Forum Vol. 877Effects of Mg and Mn Contents on Hot-Rolling...

Effects of Mg and Mn Contents on Hot-Rolling Temperature and Resultant Tensile Properties of Al-Mg-Mn Alloys

Abstract:

The effects of Mg and Mn contents on hot-rolling temperature and resultant tensile properties of Al-Mg-Mn alloys were investigated. The Al-3.5Mg-0.3 alloy as a reference and Al-7.5Mg-0.3Mn, Al-3.5Mg-1.0Mn alloys were prepared by casting for hot-rolling experiment. The rolling temperatures of both Al-7.5Mg-0.3Mn and Al-3.5Mg-1.0Mn alloys had to be decreased due to surface cracking during hot-rolling, which is caused by increased fractions of Mg-containing phases like Mg₂Al₃. The tensile strength of the hot-rolled Al-7.5Mg-0.3Mn alloy was highly increased by the combined effects of enhanced solid-solution and work-hardening at lower rolling temperature. And the resultant tensile strengths of the hot-rolled Al-3.5Mg-1.0Mn alloy were also increased due to dispersoid hardening by increased Mn content and work hardening during hot-rolling.

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Periodical:

Materials Science Forum (Volume 877)

Pages:

334-339

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.877.334

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Online since:

November 2016

Authors:

Bong Hwan Kim*, Ji Y. Lee, Young Ok Yoon, Shae K. Kim

Keywords:

Al-Mg-Mn, Aluminium Alloy, Hot Rolling, Solidification, Tensile

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