本文關(guān)鍵詞： AA焊絲 鈦 鍶 變質(zhì) 鎢極氬弧焊 顯微組織 力學(xué)性能　出處：《Transactions of Nonferrous Metals Society of China》2017年02期 　論文類型：期刊論文

【摘要】：為提高采用AA4043焊絲焊接的AA6082鎢極氬弧焊接頭的力學(xué)性能,研究了元素Ti和Sr對(duì)連鑄連軋AA4043焊絲的影響。結(jié)果表明:元素Ti、Sr變質(zhì)效果較好,可以改善AA4043焊絲的顯微組織,并提高AA6082焊縫的力學(xué)性能。與單獨(dú)添加元素Ti或Sr相比,復(fù)合添加兩種元素可以同時(shí)高效地變質(zhì)α(Al)枝晶和共晶Si相。此外,元素Ti、Sr可以改善AA6082焊縫的顯微組織,當(dāng)復(fù)合添加0.08%Ti和0.025%Sr時(shí),AA6082焊縫的抗拉強(qiáng)度達(dá)到最大。結(jié)果表明,Ti和Sr的復(fù)合添加可以實(shí)現(xiàn)較好的變質(zhì)效果。
[Abstract]:In order to improve the mechanical properties of AA6082 TIG welding joints welded with AA4043 wire, the effects of Ti and Sr on the continuous casting and rolling AA4043 welding wire were studied. The results showed that the modification effect of TIB Sr element was better and the microstructure of AA4043 wire could be improved. The mechanical properties of AA6082 welds were improved. Compared with Ti or Sr alone, both 偽 -Al dendrite and eutectic Si phases could be modified efficiently by adding two kinds of elements, and the microstructure of AA6082 welds could be improved. When adding 0.08 Ti and 0.025 Sr, the tensile strength of the weld joint AA6082 reaches the maximum. The results show that the composite addition of Ti and Sr can achieve a better metamorphic effect.
【作者單位】： 南京航空航天大學(xué)材料科學(xué)與技術(shù)學(xué)院;浙江宇光鋁材有限公司;
【基金】：Project(2015A12225)supported by the Key Technical Innovation Project Foundation of Jinhua City,China Project supported by the Priority Academic Program Development(PAPD)of Jiangsu Higher Education Institutions,China
【分類號(hào)】：TG444.74
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本文編號(hào)：1516461