발간논문

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Vol.32, No.7, 824 ~ 833, 1994
Title
Microstructure and Tensile Properties of High Strength Weldable P / M Al - Mg - Cr Extrudates
강영곤 , 김득연 , 조성석 Young Kon Kang , Deuk Yeon Kim , Seong Seock Cho
Abstract
A study has been performed on rapidly solidified Al-Mg-Cr alloy as a candidate for engineering applications requiring high strength and weldability. The objective of this work was to investigate the development of microstructure during extrusion snd tensile properties. This work has been achieved by employing a combination of X-ray diffraction, transmission electron microscopy, differential scanning calorimeter, and instron universal testing machine. The P/M Al-Mg-Cr alloy has a much finer grain and precipitates size than does I/M 5083. Through a combination of DSC and X-ray analysis obtained from Al-Mg-Cr powder and X-ray analysis from Al-Mg-Cr extrudate, the precipitate phase of being contributed to tensile strength of the extrudate is Cr₂Mg₃Al_(18).
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