Browse > Article

Microstructural Analysis of Local Tensile Deformation Characteristics in A356 Hollow Sand Cast Chassis Part  

Kim, Jae-Joong (Mg Flat Products Research Project, RIST)
Ko, Young-Jin (Materials Research Team, R & D Division, Hyundai & Kia Motors Co.)
Lim, Jong-Dae (Materials Research Team, R & D Division, Hyundai & Kia Motors Co.)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.18, no.6, 2010 , pp. 1-6 More about this Journal
Abstract
Aluminum rear lower arm is designed for luxury sedan and manufactured by hollow sand casting in the present study. Here we present the relationship between local microstructure and coupon tensile test in the rear lower arm. The characteristics of the local tensile deformation are supposed to be dependent upon Si distribution and DAS (dendrite arm spacing). Si distribution affects the yield strength and DAS affects the elongation of local area in the part, respectively.
Keywords
Hollow casting; Aluminum rear lower arm; Coupon tensile test; Si distribution;
Citations & Related Records
연도 인용수 순위
  • Reference
1 B. Zhang, M. Garro, A. Giglio and C. Tagliano, "Effect of Dendrite Arm Spacing on Mechanical Properties of Aluminum Alloy Cylinder Heads and Engine Blocks," SAE 2005-01-1683, 2005.
2 M. D. Dighe and A. M. Gokhale, "Relationship between Microstructural Extremum and Fracture Path in a Cast Al-Si-Mg Alloy," Scr. Mater., Vol.37, No.9, pp.1435-1440, 1997.   DOI   ScienceOn
3 C. H. Caceres, C. J. Davidson and J. R. Griffiths, "The Deformation and Fracture Behavior of an Al...Si...Mg Casting Alloy," Mater. Sci. Eng. A, Vol.197, No.2, pp.171-179, 1999.
4 A. A. Benzerga, S. S. Hong, K. S. Kim, A. Needleman and E. Van Der Giessen, "Smaller is Softer: An Inverse Size Effect in a Cast Aluminum Alloy," Acta Mater., Vol.49, No.15, pp.3071-3083, 2001.   DOI   ScienceOn
5 D. A. Lados, D. Apelian, P. E. Jones and J. F. Major, "Microstructural Mechanisms Controlling Fatigue Crack Growth in Al-Si-Mg Cast Alloys," Mater. Sci. Eng. A, Vols.468-470, pp.237-245, 2007.   DOI
6 L. Gaines and R. Cuenca, "Operation of an Aluminum-intensive Vehicle: Report on a Sixyear Project," SAE 2002-01-2066, 2002.
7 B. N. Keshavaram, "Aluminum Alloys for Automotive Disc Brake Calipers," SAE 1999-01-0346, 1999.
8 J. Nath, "Process & Material Options for Automotive Chassis Aluminum," SAE 950723, 1995.
9 A. Wickberg, G. Gustafsson and L.-E. Larsson, "Microstructural Effects on the Fatigue Properties of a Cast A17simg Alloy," SAE 840121, 1984.