Journal ArticleDOI
Hot deformation behavior of hot-rolled AZ31 and AZ61 magnesium alloys
TLDR
The hot deformation behavior and microstructure of AZ31 and AZ61 alloys processed by the hot-rolled technique were investigated over a strain rate range from 1×10−4 to 1x10−1/s−1 and temperatures ranging from 350 to 500°C.Abstract:
The hot deformation behavior and microstructure of AZ31 and AZ61 alloys processed by the hot-rolled technique were investigated over a strain rate range from 1×10−4 to 1×10−1 s−1 and temperatures ranging from 350 to 500 °C. Alloys were manufactured by melting and casting, and then hot-rolled at two temperatures of 350 and 450 °C. Tensile test revealed elongations of over 300% in the two alloys. The highest elongation value of 321% at a strain rate of 3×10−3 s−1 was achieved in the AZ61 alloy with a hot-rolling temperature of 350 °C. The hot tensile tests showed that there are some differences in ductility between the AZ31 and AZ61 alloys with the same rolling process specifically at low strain rates. A small enhancement in ductility is found using a lower temperature for hot-rolling at 350 °C compared to 450 °C due to improved grain refinement. It is suggested that the dominant deformation mechanism was glide controlled dislocation creep based on the stress and grain size exponent, and activation energy.read more
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Evading strength-corrosion tradeoff in Mg alloys via dense ultrafine twins.
Changjian Yan,Yunchang Xin,Xiaobo Chen,Daokui Xu,Paul K. Chu,Chaoqiang Liu,Bo Guan,Xiaoxu Huang,Qing Liu +8 more
TL;DR: In this article, an ultrafine-grain structure consisting of dense ultrafine twins is prepared, yielding a high strength up to 469 MPa and decreasing the corrosion rate by one order of magnitude.
Journal ArticleDOI
Enhanced mechanical properties due to grain refinement and texture modification in an AZ61 Mg alloy processed by small strain impact forging
M.G. Jiang,H. Yan,Ruiyi Chen +2 more
TL;DR: In this article, a small strain impact multi-directional forging (SSIMDF) was successfully applied to a commercial AZ61 magnesium alloy, which resulted in a full recrystallized microstructure with an average grain size of 16μm and much weakened double peak texture.
Journal ArticleDOI
Effect of forging on the low cycle fatigue behavior of cast AZ31B Alloy
TL;DR: In this paper, the effect of forging on the low cycle fatigue (LCF) behavior of cast AZ31B was investigated, and both models were found to accurately predict the experimentally obtained fatigue life of both alloy conditions.
Journal ArticleDOI
ANN Surface Roughness Optimization of AZ61 Magnesium Alloy Finish Turning: Minimum Machining Times at Prime Machining Costs
Adel T. Abbas,Danil Yurievich Pimenov,Ivan Nikolaevich Erdakov,Mohamed Taha,Mahmoud S. Soliman,Magdy M. El Rayes +5 more
TL;DR: A novel Edgeworth–Pareto optimization of an artificial neural network (ANN) is presented in this paper for surface roughness (Ra) prediction of one component in computer numerical control (CNC) turning over minimal machining time (Tm) and at prime machining costs (C).
Journal ArticleDOI
Multi-pass submerged friction stir processing of AZ61 magnesium alloy: strengthening mechanisms and fracture behavior
TL;DR: In this paper, a multi-pass submerged friction stir processing (M-SFSP) with an overlapping ratio of 50% was applied on as-cast AZ61 magnesium plate.
References
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Book
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Oleg D. Sherby,Jeffrey Wadsworth +1 more
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