High-temperature tensile deformation behavior and failure mechanisms of Al-10Si-Mn-Mg high-pressure die-cast alloy
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초록
To investigate the high-temperature thermomechanical properties of the aluminum alloy AlSi10MnMg (AA365), a high-temperature tensile test was conducted over a wide range of temperatures (273 K to 773 K). The tensile strength of the AA365 alloy decreased from 299 MPa to 10 MPa as the temperature increased. The tensile strain increased from 12.4 % at 273 K to 44.6 % at 673 K. The microstructural observation showed that the effect of intermetallic compounds increased rapidly with the increase in temperature. This effect led to the strengthening effect caused by disturbing the dislocation movement and was considered as the reason for the increase in yield strength. A sudden decrease in tensile strength was caused by re-dissolution of secondary phases owing to the increase in temperature near the melting point. Through the fractography analysis, it was revealed the mechanism of rapid fracture occurred by the micro-cavities induced ductility failure.
Abstract
To investigate the high-temperature thermomechanical properties of the aluminum alloy AlSi10MnMg (AA365), a high-temperature tensile test was conducted over a wide range of temperatures (273 K to 773 K). The tensile strength of the AA365 alloy decreased from 299 MPa to 10 MPa as the temperature increased. The tensile strain increased from 12.4 % at 273 K to 44.6 % at 673 K. The microstructural observation showed that the effect of intermetallic compounds increased rapidly with the increase in temperature. This effect led to the strengthening effect caused by disturbing the dislocation movement and was considered as the reason for the increase in yield strength. A sudden decrease in tensile strength was caused by re-dissolution of secondary phases owing to the increase in temperature near the melting point. Through the fractography analysis, it was revealed the mechanism of rapid fracture occurred by the micro-cavities induced ductility failure.
참고문헌 (17)
- G. Timelli, "The effects of microstructure heterogeneities and casting defects on the mechanical properties of high-pressure die-cast AlSi9Cu3(Fe)alloys", Metallurgical and Materials Transactions A, 45(12), pp.5486~5498 (2014)
- A. Niklas, "Effect of microstructure and casting defects on the mechanical properties of secondary AlSi10MnMg (Fe) test parts manufactured by vacuum assisted high pressure die casting technology", Materials Today: Proceedings, 2(10), pp.4931~4938 (2015)
- A. A. AKM, "Influence of casting defects on tensile properties of ADC12 aluminum alloy die-castings", Materials transactions, 49(7), pp.1621~1628 (2008)
- A. Niklas, "Effect of solution heat treatment on gas porosity and mechanical properties in a die cast step test part manufactured with a new AlSi10MnMg(Fe)secondary alloy", Materials Science and Engineering A, 667, pp.376~382 (2016)
- T. Jaglinski, "Creep behavior of Al-Si diecast alloys", Journal of Engineering Materials and Technology, 126(4), pp.378~383 (2004)
- Eunkyung Lee, "Effects of Cooling Rate on Precipitate Evolution and Residual Stresses in Al–Si–Mn–Mg Casting Alloy", Metals and Materials International, 24(4), pp.815~820 (2018), 대한금속·재료학회[DOI]
- Effect of cooling rate on the corrosion resistance and mechanical property of AlSi10MnMg alloy, "한국마린엔지니어링학회지", 2019, 618~624, pp.한국마린엔지니어링학회, https:
- J. E. Gruzleski, "The treatment of liquid aluminum-silicon alloys", pp.1~35 (1990), American Foundrymen's Society. Inc
- E. Samuel, "Intermetallic phases in Al–Si based cast alloys : new perspective", International Journal of Cast Metals Research, 27(2), pp.107~114 (2014)
- L. A. Narayanan, "Crystallization behavior of iron-containing intermetallic compounds in 319 aluminum alloy", Metallurgical and Materials Transactions A, 25(8), pp.1761~1773 (1994)
- H. Toda, "Influence of high-temperature solution treatments on mechanical properties of an Al–Si–Cu aluminum alloy", Acta Materialia, 58(6), pp.2014~2025 (2010)
- Z. H. Yuan, "Microstructure evolution of modified die-cast AlSi10MnMg alloy during solution treatment and its effect on mechanical properties", Transactions of Nonferrous Metals Society of China, 29(5), pp.919~930 (2019)
- R. Molina, "Mechanical characterization of aluminium alloys for high temperature applications Part1 : Al-Si-Cu alloys", Metallurgical Science and Tecnology, 29(1), pp.5~15 (2011)
- J. Onoro, "Hightemperature mechanical properties of aluminium alloys reinforced with boron carbide particles", Materials Science and Engineering A, 499(1-2), pp.421~426 (2009)
- J. A. Taylor, "The effect of iron in Al-Si casting alloys", 35th Australian foundry institute national conference, 31, pp.148~157 (2004)
- X. Cao, "Morphology of β-Al5FeSi phase in Al-Si cast alloys", Materials Transactions, 47(5), pp.1303~1312 (2006)
- R. R. Ambriz, "Light Metal Alloys Applications" (2014), IntechOpen