Production of AlSi12CuNiMg/Al2O3 Micro/Nanodispersed Surface Composites Using Friction Stir Processing for Automotive Applications
The service life of automotive components often depends on their surface properties. Consequently, improved surface properties with the retainment of bulk characteristics are necessary for such components to guarantee enhanced mechanical and tribological properties. In this research, friction stir processing (FSP) is used to produce surface composites characterized by extruded AlSi12CuNiMg matrix and micro and nano-sized Al2O3 particles as reinforcing phase. Multiple passes of FSP using two different strategies were applied to distribute the Al2O3 particles. The effect of the different FSP parameters and sequence of rotation direction for the applied passes was investigated. The processed surface layers were analyzed through optical and scanning electron microscopy, hardness, and wear testing. The properties of the processed composite surface showed to be affected by both the size of reinforcing particles and the processing direction sequence. A comparison between properties of the produced surface composites and the base metal was also carried out. Bench-type test developed to measure the weight loss of samples under sand erosion conditions.
KeywordsFriction Stir Processing (FSP) Surface Metal Matrix Composite (SMMC) Microstructure Hardness Tribological properties AlSi12CuNiMg
The Italian Ministry of Foreign Affairs and International Cooperation (MAECI), and The Egyptian Science and Technology Development Fund (STDF) are deeply acknowledged for funding this work under the Executive Programme of Scientific and Technological Cooperation Between Arab Republic of Egypt and Italian Republic.
- 2.Bogdanoff T (2017) Development of aluminium-silicon alloys with improved properties at elevated temperatureGoogle Scholar
- 3.Rakhmonov J, Timelli G, Bonollo F (2016) The effect of transition elements on high-temperature mechanical properties of Al–Si foundry alloys–a review. Advanc Eng MaterGoogle Scholar
- 4.Sears K (1997) Autom Eng Strategic Overview 2(1):55–68Google Scholar
- 5.Kaufman JG, Rooy EL (2004) Aluminium alloy castings. American Foundry Society, Columbus, OhioGoogle Scholar
- 6.Askeland DR, Phulé PP (2003) The science and engineering of materialsGoogle Scholar
- 9.Dieter GE, Bacon DJ (1986) Mechanical metallurgy, vol 3. McGraw-Hill, New YorkGoogle Scholar
- 10.Zamani M et al (2017) The role of transition metal additions on the ambient and elevated temperature properties of Al–Si alloys. Mater Sci Eng AGoogle Scholar
- 11.Sepehrband P, Mahmudi R, Khomamizadeh F (2005) Effect of Zr addition on the aging behaviour of A319 aluminium cast alloy. Scriptamaterialia 52(4):253–257Google Scholar
- 18.El-Mahallawi I, Ahmed MMZ, Mahdy AA, Abdelmotagaly AMM, Hoziefa W, Refat M (2017). Effect of Heat treatment on friction-stir-processed nanodispersed AA7075 and 2024 Al Alloys. In: Friction Stir Welding and Processing IX. Springer, Cham, pp 297–309Google Scholar
- 19.Ahmed MMZ, Refat M, El-Mahallawi I (2014) Manufacturing of nano-surface AA7075 composites by friction stir processing. In: Light Metals. Springer, Cham, pp 1417–1422Google Scholar