Cooling Rate Sensitivity of RE-Containing Grain Refiner and Its Impact on the Microstructure and Mechanical Properties of A356 Alloy

The cooling rate sensitivities of A1TiB, RE and A1TiB-RE refiners were investigated using laboratory experiments and the actual industrial applications of A356 automotive wheel via low pressure die casting technology. Their impact mechanisms on the microstructure and mechanical properties of the A35...

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Veröffentlicht in:Acta metallurgica sinica : English letters 2016-05, Vol.29 (5), p.414-421
Hauptverfasser: Zhang, Hua-Rui, Liu, Zhen-Bang, Li, Zi-Zhuo, Li, Guo-Wei, Zhang, Hu
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creator Zhang, Hua-Rui
Liu, Zhen-Bang
Li, Zi-Zhuo
Li, Guo-Wei
Zhang, Hu
description The cooling rate sensitivities of A1TiB, RE and A1TiB-RE refiners were investigated using laboratory experiments and the actual industrial applications of A356 automotive wheel via low pressure die casting technology. Their impact mechanisms on the microstructure and mechanical properties of the A356 alloy were discussed. The results demonstrated that the AITiB-RE refiner possessed most effective and synergetic refinement effects compared to the individual A1TiB or RE refiners. The A1TiB-RE refiner exhibited the least sensitivity to the cooling rate changes than the other refiners. The comprehensive properties of alloy wheel refined by the A1TiB-RE refiner were improved significantly. The tensile strength, yield strength, and elongation of wheel spoke improved by approximately 11.3%, 10.8% and 44.1%, respectively. The property difference values of the tensile strength, yield strength, and elongation in different positions of the wheel decreased from 14.8%, 31.2% and 47.7% to 8.6%, 27.1% and 30.9%, respectively.
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Sin. (Engl. Lett.)</stitle><addtitle>Acta Metallurgica Sinica(English Letters)</addtitle><date>2016-05-01</date><risdate>2016</risdate><volume>29</volume><issue>5</issue><spage>414</spage><epage>421</epage><pages>414-421</pages><issn>1006-7191</issn><eissn>2194-1289</eissn><abstract>The cooling rate sensitivities of A1TiB, RE and A1TiB-RE refiners were investigated using laboratory experiments and the actual industrial applications of A356 automotive wheel via low pressure die casting technology. Their impact mechanisms on the microstructure and mechanical properties of the A356 alloy were discussed. The results demonstrated that the AITiB-RE refiner possessed most effective and synergetic refinement effects compared to the individual A1TiB or RE refiners. The A1TiB-RE refiner exhibited the least sensitivity to the cooling rate changes than the other refiners. The comprehensive properties of alloy wheel refined by the A1TiB-RE refiner were improved significantly. The tensile strength, yield strength, and elongation of wheel spoke improved by approximately 11.3%, 10.8% and 44.1%, respectively. The property difference values of the tensile strength, yield strength, and elongation in different positions of the wheel decreased from 14.8%, 31.2% and 47.7% to 8.6%, 27.1% and 30.9%, respectively.</abstract><cop>Beijing</cop><pub>The Chinese Society for Metals</pub><doi>10.1007/s40195-016-0402-5</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record>
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subjects A356合金
Aluminum
Aluminum base alloys
Automotive wheels
Characterization and Evaluation of Materials
Chemistry and Materials Science
Cooling
Cooling rate
Corrosion and Coatings
Efficiency
Elongation
Grain refinement
Grain size
Industrial applications
Intermetallic compounds
Investigations
Low pressure
Materials Science
Mechanical properties
Metallic Materials
Microstructure
Nanotechnology
Organometallic Chemistry
Pressure die casting
Sensitivity
Spectroscopy/Spectrometry
Tensile strength
Tension tests
Tribology
Yield strength
冷却速率
力学性能
含稀土
影响率
微观组织
敏感性
细化剂
title Cooling Rate Sensitivity of RE-Containing Grain Refiner and Its Impact on the Microstructure and Mechanical Properties of A356 Alloy
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