scholarly journals Effect of Y Addition on the Semi-Solid Microstructure Evolution and the Coarsening Kinetics of SIMA AZ80 Magnesium Alloy

Metals ◽  
2017 ◽  
Vol 7 (10) ◽  
pp. 416 ◽  
Author(s):  
◽  
◽  
◽  
Keyword(s):  
Magnesium Alloy ◽  
Microstructure Evolution ◽  
Az80 Magnesium Alloy ◽  
Coarsening Kinetics ◽  
Semi Solid ◽  
Kinetics Of

scholarly journals Effect of Y Addition on the Semi-Solid Microstructure Evolution and the Coarsening Kinetics of SIMA AZ80 Magnesium Alloy

2017 ◽  
Author(s):  
Qi Tang ◽  
Hao Sun ◽  
Mingyang Zhou ◽  
Gaofeng Quan
Keyword(s):  
Magnesium Alloy ◽  
Microstructure Evolution ◽  
Shape Factor ◽  
Ostwald Ripening ◽  
Optical Microscope ◽  
Isothermal Treatment ◽  
Az80 Magnesium Alloy ◽  
Coarsening Kinetics ◽  
Semi Solid ◽  
Az80 Alloy

Semi-solid feedstock of AZ80 magnesium alloy modified by minor rare-earth Y element (0, 0.2, 0.4, 0.8 wt.%) were fabricated by strain induces melting activated (SIMA) in the form of extrusion and partial remelting. The effect of Y addition on the microstructure evolution of extruded and isothermal treated alloy was observed by optical microscope (OM), scanning electron microscope (SEM), X-ray diffraction (XRD) and quantitative analysis. The results show that the Y addition can refine the microstructure and make the β-Mg17Al12 phases agglomerating. During the subsequent isothermal treatment at 570℃, the average solid grain size, shape factor and liquid fractions increased with prolonged soaking time. Smaller spheroidal solid grains and the larger shape factor were obtained due to Y addition. The coalescence and Ostwald ripening of solid grains operated the coarsening process simultaneously. The coarsening rate constants of AZ80M1 (0.2 wt.% Y addition) of 164.22 μm3s-1 was approximately four times less than the un-modified AZ80 alloy of 689.44 μm3s-1. In contrast, the desirable semi-solid structure featured by fine, well globular solid grains and appropriate liquid fractions and shape factor was achieved in AZ80M1 alloy treated at 570℃ for 20-30 min.

The semi-solid microstructural evolution and coarsening kinetics of AZ80-0.2Y-0.15Ca magnesium alloy

2019 ◽  
Vol 154 ◽  
pp. 116-126 ◽  
Author(s):  
Lingling Fan ◽  
Mingyang Zhou ◽  
Yuwenxi Zhang ◽  
Qi Tang ◽  
Gaofeng Quan ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Microstructural Evolution ◽  
Coarsening Kinetics ◽  
Semi Solid ◽  
Kinetics Of

scholarly journals Microstructure Evolution of AZ80 Magnesium Alloy during Multi-Directional Forging Process

2014 ◽  
Vol 55 (2) ◽  
pp. 270-274 ◽  
Author(s):  
Qingfeng Zhu ◽  
Lei Li ◽  
Zhiqiang Zhang ◽  
Zhihao Zhao ◽  
Yubo Zuo ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Microstructure Evolution ◽  
Forging Process ◽  
Az80 Magnesium Alloy

Effect of Sn on the microstructure evolution of AZ80 magnesium alloy during hot compression

2017 ◽  
Vol 727 ◽  
pp. 205-214 ◽  
Author(s):  
Luyao Jiang ◽  
Weijiu Huang ◽  
Dingfei Zhang ◽  
Fei Guo ◽  
Hansong Xue ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Microstructure Evolution ◽  
Hot Compression ◽  
Az80 Magnesium Alloy

Coarsening Kinetics of Semi-solid A356–5wt%TiB2 in situ Composite

2015 ◽  
Vol 68 (6) ◽  
pp. 1075-1080 ◽  
Author(s):  
S. Deepak Kumar ◽  
Mihira Acharya ◽  
A. Mandal ◽  
M. Chakraborty
Keyword(s):  
In Situ Composite ◽  
Coarsening Kinetics ◽  
Semi Solid ◽  
Kinetics Of

The Microstructure Evolution of a High Zr-Containing WE Magnesium Alloy Through Isothermal Semi-Solid Treatment

2015 ◽  
Vol 17 (11) ◽  
pp. 1623-1630 ◽  
Author(s):  
M. Moradjoy-Hamedani ◽  
A. Zarei-Hanzaki ◽  
S. M. Fatemi ◽  
Sh. Asqardoust
Keyword(s):  
Magnesium Alloy ◽  
Microstructure Evolution ◽  
Semi Solid
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