固溶处理对Al-5.8Cu-0.6Mg-0.6Ag-0.3Nd合金组织和力学性能的影响
发布时间：2018-08-24 15:19
【摘要】：通过金相显微镜(OM)、扫描电镜(SEM)、示差扫描量热法(DSC)和室温拉伸性能测试等方法,研究固溶处理对新型高强耐热铝合金Al-5.8Cu-0.6Mg-0.6Ag-0.3Nd合金组织和力学性能的影响。结果表明:当固溶温度由510℃升高到525℃时,更多的初生相回溶至基体;当固溶温度继续升至530℃时,初生相则未进一步回溶,而再结晶晶粒的尺寸持续加剧,导致合金软化程度增加;合金的力学性能由时效强化和固溶软化共同影响,该合金优化的固溶处理制度为525℃、2 h,经(525℃,2 h)+(185℃,7 h)峰时效处理后,合金抗拉强度、屈服强度和伸长率分别为608 MPa、587 MPa和10.4%。
[Abstract]:The effect of solution treatment on the microstructure and mechanical properties of a new high strength and heat resistant aluminum alloy Al-5.8Cu-0.6Mg-0.6Ag-0.3Nd alloy was studied by means of metallographic microscope (OM), scanning electron microscope (SEM), differential scanning calorimetry (DSC) and room temperature tensile test. The results show that when the solution temperature increases from 510 鈩，
本文编号：2201228
[Abstract]:The effect of solution treatment on the microstructure and mechanical properties of a new high strength and heat resistant aluminum alloy Al-5.8Cu-0.6Mg-0.6Ag-0.3Nd alloy was studied by means of metallographic microscope (OM), scanning electron microscope (SEM), differential scanning calorimetry (DSC) and room temperature tensile test. The results show that when the solution temperature increases from 510 鈩，
本文编号：2201228
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