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TC4鈦合金激光焊接接頭組織與性能
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Microstructure and Mechanical Properties of Ti-6AL-4V Joints by Laser Beam Welding
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    摘要:

    分析不同激光焊接工藝參數(shù)下焊縫的微觀(guān)組織特征，并測(cè)試焊縫的力學(xué)性能。結(jié)果表明：TC4鈦合金激光焊接焊縫為針狀馬氏體α′組成的網(wǎng)籃組織和少量α″相；隨著焊接熱輸入量的增加，由于熔池?cái)嚢琛⒑附討?yīng)力、合金元素?zé)龘p等原因，馬氏體的分布更加散亂和密集；焊接工藝參數(shù)對(duì)焊縫相組成和各相相對(duì)含量的影響均不顯著。合理的焊接工藝參數(shù)下，接頭的強(qiáng)度高于母材

    Abstract:

    The microstructure of Ti-6Al-4V joints by laser beam welding with different welding parameters was studied, and the tensile properties were investigated. The microstructure of welding seam by laser beam welding consists mainly of α′ martensite phase as well as some α″ phase. By increasing the weld heat input，the distribution of martensite becomes more dispersive and glomerate due to the molten pool stiring, the welding stress and the burning loss of alloy elements. However, the welding parameters have no obviously effects on both the phase composition and the phase ratio. The tensile strength of joints is higher than basal metal when welded with reasonable parameters

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楊 靜,程?hào)|海,黃繼華,張 華,趙興科,郭和平. TC4鈦合金激光焊接接頭組織與性能[J].稀有金屬材料與工程,2009,38(2):259~262.[Yang Jing, Cheng Donghai, Huang Jihua, Zhang Hua, Zhao Xingke, Guo Heping. Microstructure and Mechanical Properties of Ti-6AL-4V Joints by Laser Beam Welding[J]. Rare Metal Materials and Engineering,2009,38(2):259~262.]
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  • 收稿日期:2008-01-25
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