研究剧烈塑性变形和非等温退火AA2024合金的显微组织和力学性能。对剧烈塑性变形的AA2024合金进行非等温退火，研究回复和析出之间的关系。差示扫描量热法、硬度和冲剪试验结果表明，经过非等温退火处理，静态回复和GBP区/Cu?Mg 团簇的溶解同时存在。扫描电子显微镜和背散射电子衍射结果表明，AA2024合金非等温退火至250°C促进了无沉淀区和粒子激发形核。通过10°C/min加热至250°C，由于S/S′相的存在，合金的抗剪强度和硬度达到最大。差示扫描量热法、力学性能和光学显微镜结果表明，加热至380°C时，再结晶和S/S′相的溶解共同存在。
参考文献：
[1] Ruslan Z. Valiev;Yuri Estrin;Zenji Horita.Producing Bulk Ultrafine-Grained Materials by Severe Plastic Deformation[J].JOM,20064(4):33-39.
[2] W. J. Kim;C. S. Chung;D. S. Ma;S. I. Hong;H. K. Kim.Optimization of strength and ductility of 2024 Al by equal channel angular pressing (ECAP) and post-ECAP aging[J].Scripta materialia,20034(4):333-338.
[3] M. MURAYAMA;Z. HORITA;K. HONO.MICROSTRUCTURE OF TWO-PHASE Al-1.7 at/100 Cu ALLOY DEFORMED BY EQUAL-CHANNEL ANGULAR PRESSING[J].Acta materialia,20011(1):21-29.
[4] Liu, Z.;Chen, X.;Han, X.;Gu, Y..The dissolution behavior of θ' phase in Al-Cu binary alloy during equal channel angular pressing and multi-axial compression[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,201016/17(16/17):4300-4305.
[5] M. Sarkari Khorrami;M. Kazeminezhad;A.H. Kokabi.Thermal stability during annealing of friction stir welded aluminum sheet produced by constrained groove pressing[J].Materials & design,2013Mar.(Mar.):222-227.
[6] Khorrami, M. Sarkari;Kazeminezhad, M.;Kokabi, A. H..Thermal stability of aluminum after friction stir processing with SiC nanoparticles[J].Materials & design,2015Sep.(Sep.):41-50.
[7] Mohamed, Intan Fadhlina;Yonenaga, Yosuke;Lee, Seungwon;Edalati, Kaveh;Horita, Zenji.Age hardening and thermal stability of Al-Cu alloy processed by high-pressure torsion[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2015:111-118.
[8] Farshidi, M.H.;Kazeminezhad, M.;Miyamoto, H..Severe plastic deformation of 6061 aluminum alloy tube with pre and post heat treatments[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2013:60-67.
[9] Huang, K.;Engler, O.;Li, Y. J.;Marthinsen, K..Evolution in microstructure and properties during non-isothermal annealing of a cold-rolled Al-Mn-Fe-Si alloy with different microchemistry states[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2015:216-229.
[10] Huang, Ke;Zhao, Qinglong;Li, Yanjun;Marthinsen, Knut.Two-stage annealing of a cold-rolled Al-Mn-Fe-Si alloy with different microchemistry states[J].Journal of Materials Processing Technology,2015:87-99.
[11] C. Genevois;A. Deschamps;A. Denquin.Quantitative investigation of precipitation and mechanical behaviour for AA2024 friction stir welds[J].Acta materialia,20058(8):2447-2458.
[12] Myriam Nicolas;Alexis Deschamps.Characterisation and modelling of precipitate evolution in an Al-Zn-Mg alloy during non-isothermal heat treatments[J].Acta materialia,200320(20):6077-6094.
[13] C. Schafer;V. Mohles;G. Gottstein.Modeling of non-isothermal annealing: Interaction of reerystallization, recovery, and precipitation[J].Acta materialia,201117(17):6574-6587.
[14] Yazdanmehr, M;Bahrami, A;Anijdan, SHM.A precipitation-hardening model for non-isothermal ageing of Al-Mg-Si alloys[J].Computational Materials Science,20092(2):385-387.
[15] Mourad Ibrahim Daoudi;Abdelhafid Triki;Abdelkrim Redjaimia;Chihaoui Yamina.The determination of the activation energy varying with the precipitated fraction of β" metastable phase in an Al-Si-Mg alloy using non-isothermal dilatometry[J].Thermochimica Acta: An International Journal Concerned with the Broader Aspects of Thermochemistry and Its Applications to Chemical Problems,2014:5-10.
[16] Khan, IN;Starink, MJ;Yan, JL.A model for precipitation kinetics and strengthening in Al-Cu-Mg alloys[J].Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing,20081/2(1/2):66-74.
[17] C.R. Hutchinson;F. de Geuser;Y. Chen.Quantitative measurements of dynamic precipitation during fatigue of an Al-Zn-Mg-(Cu) alloy using small-angle X-ray scattering[J].Acta materialia,2014:96-109.
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