發(fā)布時間：2018-03-25 15:56

  本文選題：鋁合金　切入點：固溶處理　出處：《特種鑄造及有色合金》2016年11期

【摘要】：采用金相觀察、力學(xué)性能測試等方法,研究了固溶處理對7021鋁合金板材顯微組織與力學(xué)性能的影響。結(jié)果表明,隨固溶溫度的升高和保溫時間的延長,合金的未溶相逐步溶入基體,經(jīng)120℃×24h人工時效后,合金強度逐漸提高,380℃×40min固溶時合金強度最高。而隨著固溶溫度進一步升高或固溶時間不斷延長,合金中纖維狀組織發(fā)生再結(jié)晶,晶粒不斷長大,合金強度降低,伸長率提高。7021鋁合金的最佳固溶處理工藝為380℃下保溫40min。
[Abstract]:The effect of solution treatment on the microstructure and mechanical properties of 7021 aluminum alloy sheet was studied by means of metallographic observation and mechanical property test. The results showed that with the increase of solution temperature and the prolongation of holding time, the effect of solution treatment on the microstructure and mechanical properties of 7021 aluminum alloy sheet was studied. The insoluble phase of the alloy gradually dissolved into the matrix. After artificial aging at 120 鈩，

本文編號：1663822