Effect of Ti Content on Microstructure and Hardness of A356 Alloy

Min Qu; Liu Bin Zheng; Ming Zhao; Ting Ting Li; Feng Bin Liu; Guang Ping He

doi:10.4028/www.scientific.net/AMR.535-537.932

Paper Titles

Research on a New Type Grain Refiner Refining α-Al by Adding Molten State and Diluted Al-Ti-B-RE Master Alloy
p.915

Effects of Ni/Ti Ratio and Heat-Treatment on Transformation Temperature, Mechanical Properties and Shape Recovery Strain of Ni-Ti-Nb Alloy
p.919

Effect of Rolling Deformation to Microstructure and Properties of Mg-8.5Li-1Al-1Ce Alloy
p.924

Fatigue Behavior of GH4169 Alloy up to Very High Cycles
p.928

Effect of Ti Content on Microstructure and Hardness of A356 Alloy
p.932

Fractal Characteristics of Primary Phase Morphology in Semisolid A356 Alloy
p.936

The Effect of Cold-Drawing on Recovery Stress of Ni-Ti-Nb Shape Memory Alloy
p.941

Study on the Mechanical Property and Microstructure of Surgical Implanted Ti-6Al-7Nb Titanium Alloy
p.945

Influence of Gd Addition on the Structure and Capability of Ni-Mn-In Metamagnetic Shape Memory Alloys
p.950

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 535-537Effect of Ti Content on Microstructure and...

Effect of Ti Content on Microstructure and Hardness of A356 Alloy

Abstract:

In order to refine the microstructure of A356 alloy, the effect of different contents of Ti on A356 alloy was analyzed with scanning electron microscopy (SEM). Experimental results show that it is not following the law of the more the content of Ti is, the finer the microstructure in the range of 0% to 7.5% Ti. However, the microstructure undergoes a first refining as the content of Ti is less than 0.3% and then coarsening with the increasing of Ti. Further, the mechanism of grain refiner is explained from three aspects. Finally, the hardness of A356 alloy is studied to verify the effect of different contents of Ti. The results confirm that the variety of hardness is in accordance with that of microstructure.