DocumentCode :
2868062
Title :
A numerical model for the grain refinements of the aluminium alloys automobile wheel
Author :
Wang, Aiqin ; Xie, Jingpei ; Li, Jiwen ; Wang, Wenyan
Author_Institution :
Phys. Sci. & Technol. Coll., Zhengzhou Univ., Henan
fYear :
2006
fDate :
25-28 June 2006
Firstpage :
1413
Lastpage :
1417
Abstract :
Based on the traditional solidification mechanism, a numerical model for the new grain refinements of the aluminium alloys of an automobile wheel has been established. It is assumed that the constitutional undercooling generated by the growth of a grain is equivalent to the undercooling required for nucleation of another adjacent grain; and the distance between nucleation events is defined as the relative grain size in the final microstructure; the negative thermal gradient and the latent heat at the grain-liquid interface are negligible in comparison to the amount of constitutional undercooling; the thermal physical parameters are fixed. On the basis of numerical model results, the constitutional undercooling and the relative grain size of the grain refinements have been calculated. The nucleation undercooling of the new grain is about 0.5-1.0 K, which is lower than traditional aluminium alloys by 0.3-0.5 K. The numerical model results can be used to investigate the grain refinement mechanism, and the new grain refinements can be used to produce aluminium alloys automobile wheel
Keywords :
aluminium alloys; automotive components; computer aided engineering; cooling; grain growth; grain refinement; nucleation; solidification; wheels; aluminium alloys automobile wheel; computer aided engineering; constitutional undercooling; grain growth; grain nucleation; grain refinements; grain-liquid interface; latent heat; microstructure; negative thermal gradient; numerical model; solidification mechanism; Aluminum alloys; Automobile manufacture; Computer aided manufacturing; Grain size; Metals industry; Microstructure; Numerical models; Refining; Titanium alloys; Wheels; Aluminium alloys automobile wheel; Constitutional undercooling; Grain refinement; Numerical model; Relative grain size;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Mechatronics and Automation, Proceedings of the 2006 IEEE International Conference on
Conference_Location :
Luoyang, Henan
Print_ISBN :
1-4244-0465-7
Electronic_ISBN :
1-4244-0466-5
Type :
conf
DOI :
10.1109/ICMA.2006.257836
Filename :
4026296
Link To Document :
بازگشت