Kim, DaeHwan
(Carbon and Light Materials Application R&D Group, Korea Institute of Industrial Technology, 100, Jipyungsun sandan 3gil, Backsan-Myeon, Gimje, 54325, South Korea)
,
Kim, JaeHwang
(Carbon and Light Materials Application R&D Group, Korea Institute of Industrial Technology, 100, Jipyungsun sandan 3gil, Backsan-Myeon, Gimje, 54325, South Korea)
,
Son, HyeonTaek
(Automotive Components and Materials R&D Group, Korea Institute of Industrial Technology, 6, Cheomdangwagi-ro 208beon-gil, Buk-gu, Gwangju, 61012, South Korea)
,
Woo, KeeDo
(Division of Advanced Materials Engineering, Chonbuk National University, 567, Baekje-Daero, Deokjin-gu, Junju, 54896, South Korea)
Effects of Fe addition on rolling and age-hardening behavior in Al-Si-Mg alloys are investigated in this paper. Microstructure evolution of rolled Al-Si-Mg based alloys was observed using an optical microscope and field emission scanning electron microscope. The chemical compositions of Fe intermeta...
Effects of Fe addition on rolling and age-hardening behavior in Al-Si-Mg alloys are investigated in this paper. Microstructure evolution of rolled Al-Si-Mg based alloys was observed using an optical microscope and field emission scanning electron microscope. The chemical compositions of Fe intermetallic compounds (Fe-IMCs) were analyzed by energy dispersive spectrometer (EDS). Fe-IMCs were finely fragmented with the size of around 300 nm and well distributed in the Al matrix through cold rolling process. Heat treatments were carried out to understand the effects of Fe-IMCs on the age-hardening behavior. The peak hardness of Fe-free, 0.5% Fe and 1.0% Fe alloys during aging at 250 degrees C appeared at 1.8, 1.2 and 0.6 ks, respectively. The age-hardening is accelerated at the initial stage during aging at 250 degrees C, while the degree of hardness difference decreased with increasing the Fe contents.
Effects of Fe addition on rolling and age-hardening behavior in Al-Si-Mg alloys are investigated in this paper. Microstructure evolution of rolled Al-Si-Mg based alloys was observed using an optical microscope and field emission scanning electron microscope. The chemical compositions of Fe intermetallic compounds (Fe-IMCs) were analyzed by energy dispersive spectrometer (EDS). Fe-IMCs were finely fragmented with the size of around 300 nm and well distributed in the Al matrix through cold rolling process. Heat treatments were carried out to understand the effects of Fe-IMCs on the age-hardening behavior. The peak hardness of Fe-free, 0.5% Fe and 1.0% Fe alloys during aging at 250 degrees C appeared at 1.8, 1.2 and 0.6 ks, respectively. The age-hardening is accelerated at the initial stage during aging at 250 degrees C, while the degree of hardness difference decreased with increasing the Fe contents.
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