【摘要】：AA6061鋁合金擠壓管材在常溫下強(qiáng)度高但塑性差,難以成形復(fù)雜形狀零件。基于此,提出了固溶處理+固體顆粒介質(zhì)脹形+人工時(shí)效的工藝流程,通過固溶、淬火和時(shí)效等熱處理工藝調(diào)整鋁合金變形前后的力學(xué)性能,應(yīng)用固體顆粒介質(zhì)脹形技術(shù)實(shí)現(xiàn)管件塑性成形。以AA6061擠壓鋁合金管為研究對象,分析了固溶處理工藝參數(shù)對合金力學(xué)性能的影響,發(fā)現(xiàn)管材經(jīng)固溶溫度560℃且保溫120min處理后,其延伸率提高3倍以上,強(qiáng)度和硬度也大幅降低,使合金管材的成形性能指標(biāo)顯著提高,具備了固體顆粒介質(zhì)脹形管件的條件;對合金固溶處理后再人工時(shí)效處理的試驗(yàn)研究表明,人工時(shí)效溫度180℃且保溫360min時(shí)合金塑性下降,強(qiáng)度和硬度等性能指標(biāo)均可恢復(fù)至初始狀態(tài)�；阡X合金熱處理工藝特征的研究,采用固溶處理+固體顆粒介質(zhì)脹形+時(shí)效處理的工藝流程,成功試制了AA6061鋁合金典型的正方形截面管件,其環(huán)向最大展長率可達(dá)34%。
[Abstract]:AA6061 aluminum alloy extruded tube is difficult to form complicated shape parts because of its high strength and poor plasticity at room temperature. Based on this, the technological process of artificial aging of solid particle medium bulging was put forward. The mechanical properties of aluminum alloy before and after deformation were adjusted by means of heat treatment such as solid solution, quenching and aging. The plastic forming of pipe is realized by using solid particle medium bulging technology. The effect of solution treatment parameters on the mechanical properties of AA6061 extruded aluminum alloy tube was analyzed. It was found that the elongation of the tube treated by solution at 560 鈩，

本文編號：2339463