本文選題：金屬材料 + 強韌性　； 參考：《材料研究學(xué)報》2017年10期

【摘要】：結(jié)合金相組織觀察及能譜分析、DSC熱差分析、JMat Pro 5.0軟件計算和室溫力學(xué)性能測試,研究低頻電磁鑄造新型高強Al-Mg-Si-Cu合金鑄態(tài)、擠壓態(tài)和T6態(tài)的組織性能。結(jié)果表明,該新型合金系的均勻化溫度和固溶溫度可分別確定為540℃和550℃。Mg_2Si強化相能顯著細(xì)化合金鑄態(tài)組織且細(xì)化程度隨其含量增大遞增,而過量Si或過量Mg均能減弱細(xì)化劑和Mg_2Si相對合金鑄態(tài)組織的細(xì)化作用。Mg的過量添加不會降低合金強度但可提高其延伸率至19%以上。該新型Al-Mg-Si-Cu合金中,當(dāng)Mg質(zhì)量分?jǐn)?shù)為1.60%、Si質(zhì)量分?jǐn)?shù)為1.15%時,可獲得較高強度(抗拉強度419 MPa、屈服強度362 MPa)而又不損害其塑性(延伸率18.75%)。
[Abstract]:The microstructure and properties of a new type of high strength Al-Mg-Si-Cu alloy in low frequency electromagnetic casting were studied by means of the calculation of JMat Pro 5.0 and mechanical properties at room temperature. The microstructure and properties of the new high strength Al-Mg-Si-Cu alloy in low frequency electromagnetic casting were studied by means of DSC thermal differential analysis (DSC) and energy spectrum analysis (EDS). The results show that the homogenization temperature and solution temperature of the new alloy system can be determined to be 540 鈩，

本文編號：2056032