Study on Semi-Solid Magnesium Alloys Slurry Preparation and Continuous Roll-Casting Process

Xie, Songhai; He, Yanlin; Mi, Xujun

doi:10.5772/13505

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2019

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“…Semi-solid casting process is used as a kind of new metal forming method because the results are better than other casting process. Semi-solid casting has many advantages, namely a higher viscosity than the liquid metal, shrinkage when freezing is low, the product dimension precision, producing latent heat low so that no thermal shock to the mold and the material can fill the mold cavity elaborately shaped and thin [ 4].…”

Section: Introduction mentioning

confidence: 99%

Effect of Temperature Semi-solid Casting Process on AZ91D Magnesium Alloys to Hardness and Microstructures

Kusharjanto

Sutarno

Mulyani

2019

ijp

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This study investigates the effect of temperature semi-solid casting process for magnesium alloys AZ91D in an effort to increase the mechanical properties for the application of lightweight structures. In this experiments, semi-solid casting process is varied temperatures ranging from 500, 510, 520, 530 and 540°C. Results of hardness testing obtained the highest average is 64.4 BHN at a temperature of 500°C, which higher than the as-cast 42.56 BHN (an increase of 33.91%). The increasing of hardness occur because of changes in the microstructure of dendrite structures into globular grains, which have α-Mg phase and ß-Mg17Al12. Small spherical grain shape and spread evenly with a size of 40.08 μm obtained at temperatures of 500°C and size 77.2 μm at temperatures 540°C.

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Section: Introduction mentioning

confidence: 99%