Effect of homogenization heat treatment on refractory phase and grain size of 5083 aluminum alloy

被引：1
|
作者：
Huang, Yuanchun [1 ,2 ,3 ]
Wu, Zhenli [1 ]
Wang, Xucheng [2 ]
Zhao, Jianye [1 ]
Ma, Shangkun [1 ]
Yan, Jijun [1 ]
机构：
[1] Cent South Univ, Inst Light Alloys, Changsha 410083, Peoples R China
[2] Cent South Univ, Sch Mech & Elect Engn, Changsha 410083, Peoples R China
[3] Cent South Univ, State Key Lab High Performance Complex Mfg, China, Changsha 410083, Peoples R China
来源：
CAILIAO GONGCHENG-JOURNAL OF MATERIALS ENGINEERING | 2023年 / 51卷 / 04期
关键词：
homogenization; 5083 aluminum alloy; refractory phase; AL-Mg-Mn; differential scanning calorimetry DSC; BEHAVIOR; DISPERSOIDS; PARTICLES;
D O I：
10.11868/j.issn.1001-4381.2022.000217
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
duringhomogenization ofthe 5083 aluminum alloy,material microstructure was characterized by metallographicmicroscope(OM),scanningelectron microscope(SEM),energydispersivespectrometer (EDS),differentialscanningcalorimetry (DSC)and X-raydiffractometer (XRD).Theresultsshow thattherefractory phasesinthecast5083 aluminum alloyarecomposed of Al(FeMnCr)phases, Al(FeMnCr)Siphasesand Mg2Siphases.Thecompositionofthecaststatealloywasverifiedbyusing phasediagram calculations,and theresults are basicallyconsistent with the experiment.Asthe temperaturerises from 460 degrees C to 560 degrees C,the electrical conductivityincreases firstly and then decreases.Thisisrelatedtotheprecipitationofdispersedphaseandthedissolutionofrefractoryphase inthestructure.Whenthehomogenizationprocessingis540 degrees C/10hand560 degrees C/10h,therefractory phaseisdominatedbytheneedle-flake Al(FeMnCr)phases,Mg2Siphasesisfullysolubilized,the areafractionsare0.730% and0.632%,respectively,andthereisnooverburnedtissueatthesame time,andthereareobviousdispersedphaseparticlesinthegrain.Therefore,todissolvepartofthe refractoryphasesincast5083aluminum alloy,thehomogenizationtemperature mustbe >= 540 degrees C. Increasinghomogenizationtemperatureandprolonginghomogenizationtime willincreasegrainsize. Whenthehomogenizationtemperatureislessthan540 degrees C,theinsolublephasechangeshavelittle effectonthegraingrowth,whenthehomogenizationtemperatureisgreaterthan540 degrees C,theaverage grainsizebeginstobegreaterthan140 mu m,andtherefractoryphaseisdissolvedatthesametime.
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页码：103 / 112
页数：10
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