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LY12 aluminum alloy and copper Experimental study on properties of friction welding

Specimens from the weld ((heat processing technology Volume 35, 2006 joint statement of lines l5 disconnected. Showed a brittle fracture characteristics. Joints poor impact toughness, impact value is less than lOkJ,[link widoczny dla zalogowanych], m. But an aluminum one LYI2 lm friction welded copper from several free-fall height. fracture phenomena were not found, their impact value to 3OkJl, m or so. LY12 one system than the impact toughness of friction welding table 4LYI2 a 4-5 times higher copper and LYI2 an aluminum copper friction welding of a shock value (kJ · mLY12 636072248.0LYI2-pot of a copper joint copper fittings 28O30.42773l22892.1.3 a bending test results showed that the bending test. LYl2 a copper friction welding bending angle is almost zero. The LYI2 gold and one bronze friction welded aluminum for a bending angle of the Ih】 transition with the increase of repeated thickness. Table 5,[link widoczny dla zalogowanych], the cracking bending intermediate layer of pure aluminum in an aluminum one on the actinides Xiang 5LYI2 friction welding between the bending test results _ spit towel tower thick mound mm122.03485.6.6 contingent joint bending angle m, r】 9813l924325l47 mechanical test results indicated. LY12 with intermediate layer of pure aluminum and copper friction welding tensile strength and bending plastic has greatly improved, the impact toughness is also a larger increase in + LYl2 and copper friction welding performance improved significantly. which when asked select the appropriate thickness of transition layer. obtain high strength and high ductility of an aluminum LYI2 2.2 and one bronze friction welded microstructure analysis diagram l (a) shows the LY12-copper friction welding microstructure seen. in the formation of the weld joint surface at a large number of intermetallic compounds (from color) It greatly reduces the production of joint strength, ductility and toughness, leading to a copper friction welding properties of LY12 main reason for shame indiscriminately l (b) LY】 2 shows an aluminum copper friction welding of a microstructure seen. In connection with the aluminum surface of a copper metal formed at the power to ask compounds (white). But compared with the former. their number greatly reduced. wells and thin along the joint surface, the continuous distribution of performance through the big test and metallographic Cuan Quantitative analysis showed that when the question of Taiwan,[link widoczny dla zalogowanych], the metal material layer thickness is about 1.5 $ tm control, the availability of good mechanical properties of welded joints. Table 6. This shows. using aluminum for the Q transition layer to improve the LY12 an aluminum copper friction welding performance of a technology is feasible,[link widoczny dla zalogowanych], intermediate layer to reduce fires in the formation of intermetallic compounds between the decline of 6 sets of metal thickness and LYI2 a bad one bronze friction welded aluminum tensile strength obstruct the diagram lLY12 a copper friction welding (a), LYI2 a friction welded aluminum and copper (b) microstructure) <4003 Conclusions (1) In this experimental condition, LY12 a copper poor mechanical properties of friction welded, anti-trust strength of 70 - 80MPa. impact toughness and bend the plastic is almost zero, LYl2 a copper friction welding performance is poor (2) using aluminum for the intermediate layer can greatly improve the performance of LYI2 a copper friction welding, welding in the Bong optimization parameters. LY12-aluminum copper friction welding of a tensile strength of up to 140MPa, a copper than aluminum, high tensile strength of friction welded joints, can meet the needs of various industries: (3) LYI2 an aluminum copper friction welding of a weld metal mechanical properties and quantitative analysis of gold shed that depends on mechanical properties of joints of copper with aluminum surfaces at a compound layer thickness of the metal to ask when its thickness is about control of 1.5m, the fracture occurred in the intermediate layer of pure aluminum , you can get a certain plasticity, toughness, high strength joints. References: I】] Qi Shui new bug Yang Rui Peng welded steel boat progress】【J Welding .2000.29 (5): 4.5 【2】 Xi Chi master, Arong. Guorui Jie. LY | 2 aluminum Taijin Arts stir welding research 【Fu rub. Lanzhou University of Technology .200430 (41:12 a I4 【3】 Sun first disk. Haoran. crisp Ke Jie dummy points with Xi and other housing units sprained Recovering pull layered material layer exposed vessels pupil of the former Chao. ... Recovering Materials destroy 200017 (4) :105-109, [4JKunihiKoSatohJsutom ~ Doi, MasaoJoyada.Sig ~ ~ ffectooilstaticj ~ jnepropertlesofweldedjaJntsincludingsoRInterface 【J]. fan then Society, 1968. (11) :1214-1226. tender process Tian Zhao 40 35 2006 Volume l5 of

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