Abstract：Nanoscaled aluminum nitride (AlN) dispersion strengthened 2024 aluminum alloys were prepared using a novel approach in which compacts of Al-Mg-Cu were partially nitrided in flowing nitrogen gas atmosphere. The compacts were subsequently consolidated through sintering and hot extrusion. The microstructure and mechanical properties of the material were preliminarily investigated. Transmission electron microscope and X-ray diffraction pattern reveal that AlN particles form during nitridation of the Al-Mg-Cu compacts. The material exhibits excellent mechanical properties after hot extrusion and heat treatment. The ultimate tensile and yield strength of the extruded samples containing 7.95% (volume percent) AlN with T6 heat treatment are 665 MPa and 553 MPa， respectively.
曹慧钦，郭志猛，叶安平，罗 骥. 原位合成制备AlN弥散强化2024铝合金的研究[J]. , 2016, 26(01): 28-31.
CAO Hui-qin，GUO Zhi-meng，YE An-ping，LUO Ji. Study on the preparation of AlN dispersion strengthened 2024 aluminum alloy by in situ synthesis. , 2016, 26(01): 28-31.
[1]Benjamin JS, Bomford MJ.Dispersion strengthened aluminum made by mechanical alloying[J].Metallurgical Transactions A, 1977, 8(8):1301-1305
[2]Benjamin JS, Schelleng RD.Dispersion strengthened aluminum-4 pct magnesium alloy made by mechanical alloying[J].Metallurgical Transactions A, 1981, 12(10):1827-1832
[3]Liu ZY, Kent D, Schaffer GB.Powder injection moulding of an Al-AlN metal matrix composite[J].Materials Science and Engineering A, 2009, 513-514(7):352-356
[4]Kondoh K, Takada Y.Tribological property of in situ directly nitrided and sintered AlAlN composite[J].Powder Metallurgy, 2000, 43(1):69-75
[5]Lumley RN, Sercombe TB, Schaffer GB.Surface oxide and the role of magnesium during the sintering of aluminum[J].Metallurgical and Materials Transactions A, 1999, 30(2):457-463
[6]Yan M, Yu P, Schaffer GB, Qian M.Secondary phases and interfaces in a nitrogen-atmosphere sintered Al alloy: Transmission electron microscopy evidence for the formation of AlN during liquid phase sintering[J].Acta Materialia, 2010, 58(17):5667-5674
[7]Sercombe TB, Schaffer GB.On the role of tin in the nitridation of aluminium powder[J].Scripta Materialia, 2006, 55(4):323-326
[8]Sercombe TB, Schaffer GB.On the role of magnesium and nitrogen in the infiltration of aluminium by aluminium for rapid prototyping applications[J].Acta Materialia, 2004, 52(10):3019-3025
[9]Prin GR, Baffie T, Jeymond M, Eustathopoulus N.Contact angels and spreading kinetics of Al and Al-Cu alloys on sintered AlN[J].Materials Science and Engineering A, 2001, 298(1-2):34-43
[10]Kent D, Schaffer GB, Sercombe TB, Drennan J.A novel method for the production of aluminium nitride[J].Scripta Materialia, 2006, 54(12):2125-2129
[11]Peng Y, Balog M, Yan M, Schaffer GB, Qian M.In situ fabrication and mechanical properties of Al–AlN composite by hot extrusion of partially nitrided AA6061 powder[J].Journal of Materials Research, 2011, 26(14):1719-1725
[12] Qian M, Kondoh K, Kent D, Umeda J, Yu P, Schaffer GB.The in-situ fabrication of Al?A1N composites from metal powders and their resistance to wear and cavitation[J]. Materials Science Forum, 2009, 618-619: 617-620.[J].Materials Science Forum, 2009, 618-619:617-620
[13]Yu P, Yan M, Schaffer GB, Qian M.Pressureless infiltration and resulting mechanical properties of Al?AlN preforms fabricated by selective laser sintering and partial nitridation[J].Metallurgical & Materials Transactions A, 2010, 41(9):2417-2424
[14]Balog M, Yu P, Qian M, Behulova M, Svec Sr P, Cicka R.Nanoscaled Al–AlN composites consolidated by equal channel angular pressing (ECAP) of partially in situ nitrided Al powder[J].Materials Science and Engineering A, 2013, 562(2):190-195
[15]Kent D, Qian M, Schaffer GB.Formation of aluminium nitride during sintering of powder injection moulded aluminium[J].Powder Metallurgy, 2010, 53(2):118-124
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