【摘 要】
：
This study aims to investigate the influence of Mg/Si ratio (Mg+Si =1.0 at.％) to aging behavior on Al-Mg-Si alloy.Those alloys were hot extruded to 1.5 mm in thickness and cold rolled to 1.0 mm in thi
【机 构】
：
Graduate school of Science and Engineering for Education, University of Toyarna, Japan
【出 处】
：
15th International Conference on Aluminium Alloys(ICAA15)(第十
论文部分内容阅读
This study aims to investigate the influence of Mg/Si ratio (Mg+Si =1.0 at.％) to aging behavior on Al-Mg-Si alloy.Those alloys were hot extruded to 1.5 mm in thickness and cold rolled to 1.0 mm in thickness sheet.Those sheets were solution heat treated at 848 K for 3.6 ks, quenched into cold water and then aged at 473 K in oil bath.Mechanical properties were investigated by means of universal tensile tester and Vickers microhardness tester.Tensile test was carried out using the peak-aged samples.Ultimate tensile stress (UTS) and 0.2 ％ proof stress increased with decreasing of Mg/Si ratio.Total and uniform elongations increased with increasing of Mg/Si.Microstructure of peak-aged samples was observed using transmission electron microscopy (TEM).TEM observation confirmed a different precipitation sequence, β" phase in lower Mg/Si ratio and βphase in higher Mg/Si ratio.Number density of precipitates increased with decreasing of Mg/Si ratio.
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