3,接頭抗拉強度最大值提高到285.3MPa,達到鋁合金母材抗拉強度的68％,接頭斷裂方式呈脆性+韌性混合型斷裂。"/>

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中間層材料對Ti/Al異種金屬攪拌摩擦焊組織性能影響
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南昌航空大學(xué)輕合金加工科學(xué)與技術(shù)國防重點學(xué)科實驗室,南昌航空大學(xué)輕合金加工科學(xué)與技術(shù)國防重點學(xué)科實驗室,南昌航空大學(xué)輕合金加工科學(xué)與技術(shù)國防重點學(xué)科實驗室

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國家自然科學(xué)基金(51265042)、江西省自然科學(xué)基金(20114BAB206006)、南昌航空大學(xué)臥龍之星培養(yǎng)計劃項目(201302)


Effect of intermediate layer on microstructure and mechanical properties of Ti/Al joint welded by friction stir welding
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NationalSDefenseSKeySDisciplinesSLaboratorySofSLightSAlloySProcessingSScienceSandSTechnology,Nanchang Hangkong University,NationalSDefenseSKeySDisciplinesSLaboratorySofSLightSAlloySProcessingSScienceSandSTechnology,Nanchang Hangkong University,NationalSDefenseSKeySDisciplinesSLaboratorySofSLightSAlloySProcessingSScienceSandSTechnology,Nanchang Hangkong University

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Shandong Young Scientists Award Fund (BS2012NJ010)

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    摘要:

    以3mm厚2A14鋁合金和TC4鈦合金為試驗材料,分別添加0.05mmZn和Ni箔片,研究了不同工藝參數(shù)下Zn和Ni對接頭微觀組織、力學(xué)性能的影響。試驗結(jié)果表明：當(dāng)添加中間層Zn時,在旋轉(zhuǎn)速度為375r/min、焊接速度為75mm/min時,接頭抗拉強度達到最大值237.3MPa,為鋁合金母材拉伸強度的56.7%。同樣參數(shù)下,添加中間層Ni后,能顯著減少接頭中脆性相TiAl3,接頭抗拉強度最大值提高到285.3MPa,達到鋁合金母材抗拉強度的68％,接頭斷裂方式呈脆性+韌性混合型斷裂。

    Abstract:

    The effects of process parameters, microstructure, mechanical properties of the joints, which were frabricated by friction stir welding (FSW) using 3mm 2A14 aluminium alloy and TC4 titanium alloy with a 0.05mm Zn and Ni ribbon as intermediate layer, were studied. The results indicate that the joint maximum tensile strength exceed to 237.3 MPa when the welding velocity, rotation speed are 75mm/min, 375 r/min, respectively, nearly 56.7% of the alluminum alloy. The joint maximum tensile strength reached 285.3 MPa at the same process parameters with add Zn as intermediate layer, nearly 68% of the alluminum alloy when add Ni as intermediate layer what can inhibit brittle phase TiAl3 , which the fracture mode is brittle/ductile fracture.

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張鑫,陳玉華,王善林.中間層材料對Ti/Al異種金屬攪拌摩擦焊組織性能影響[J].稀有金屬材料與工程,2016,45(5):1290~1295.[Zhang Xin, Chen Yuhua, Wang Shanlin. Effect of intermediate layer on microstructure and mechanical properties of Ti/Al joint welded by friction stir welding[J]. Rare Metal Materials and Engineering,2016,45(5):1290~1295.]
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  • 收稿日期:2015-02-28
  • 最后修改日期:2015-05-29
  • 錄用日期:2015-08-11
  • 在線發(fā)布日期: 2016-06-02
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