New High Strength and Heat Resistance Aluminum Alloy Material for Engine Cylinder Head

Abstract:

The effect of Cu、Ni、Fe、Mn on the mechanical properties of Al-Si alloy by orthogonal experiment method was investigated in this paper. By tensile testing and microstructure analysis, the content Ni element is 1% under the condition of Cu. The addition of Fe can improve high temperature strengthening of the alloy. However, we need to control the ratio of Fe and Mn to prevent the appearance of β phase, and reduce herringbone Fe phase. The best content of Cu、Ni、Fe、Mn is 1%,0.7%,0.9% and 0.5%. Thus the alloy’s room temperature and high temperaturetensile strength reaches 249MPa and 212MPa, fully meet the requirements of high-temperature load of the cylinder head.

• Periodical: Advanced Materials Research (Volume 1002)
• Pages: 69-72
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1002.69
• Online since: August 2014
• Authors: Jin Lei Li, Yong Su, Teng Di Ma, Qin Wang
• Keywords: Cast Al-Si Alloy, Engine Cylinder Head, High Temperature Strengthening

References

[1] Molina R, Leghissa M, Leghissa. New developments in high performance cylinder heads: Application of LHIP and split cylinder head concept. Metallurgical Science and Technology, 2004, 22(2):18.

[2] Dahui Chen，Xianglei Jia，Xiurong Zhu. Advances in casting aluminum alloy for engine cylinder head. Casting Technology，2010,31(7),ppC882-887.(in Chinese)

[3] Xianglei Jia，Dahui Chen，Xiurong Zhu. Effects of Cu on microstructure and mechanical properties in Al-Si-Cu-Ni alloy.Special Casting & Nonferrous Alloys，2010,30（9）,ppC871-873.(in Chinese)

[4] Yuying Wu，Xiangfa Liu，Binggang Jiang. Study on Fe-Si composite phase in the alloy Al-Si-Fe-Cu-Mg-Ni. Casting，2005,54（10），ppC959-962.(in Chinese)