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titanium alloy was made. This method which can eliminate welding defects such as undercut and weld metal porosity gives full play to the function of activating function of flux. The results show... Table 1 Parameters for activating flux of Ti31 alloy 2 结果与分析 2.1 焊缝外观分析 使用自制的复合钛合金TIG焊接活性剂,按照表2所示的焊接工艺规范进行Ti31板材的A-TIG焊接实验.焊接电弧从未涂敷活性剂一侧行走到涂敷活性剂的一侧.图2所示为不同普通TIG焊接与A-TIG焊的焊缝截面. 从图......
University,Qinhuangdao 066004, China; 2. School of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, China) Abstract: Based on different kinds of metal-ceramic binders, the effects... of various ceramic additives on the growth of WC grains and the modification effects of ceramic additives on cemented carbides were compared. Besides, the development potential of using high-entropy alloy......
hydroforming of magnesium alloy tube TANG Ze-jun, YUAN Shi-jian, LIU Gang (School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China) Abstract: The deformation mechanism was analyzed for an AZ31B magnesium alloy tube in warm hydroforming process by numerical simulation and plasticity theory. The critical wrinkling stress, the stress state and the shape......
) Abstract: The reciprocating wear behavior of an MAO film of aluminum alloy LY12 flat was investigated in artificial rain water, artificial sea water and distilled water by using the ball-on–flat...: aluminum alloy; micro-arc oxidation; corrosion wear; friction coefficient 铝合金因其比强度高,耐腐蚀性好等优点,而在航空航天业上得到广泛应用,尤以民用飞机上的用量最大,约为70%~80%,在军用飞机上的用量则为40%~60%[1] 但铝合金的硬度低,耐磨性差,因此,在实际应用中对铝合金进行适当的表面处理以增强其抗蚀抗磨能力已成为必不可......
; Abstract: Based on a dynamic analysis method and an explicit algorithm, a dynamic explicit finite element code was developed for modeling... aluminum alloy were chosen to investigate the effect of material parameters on the stress wave propagation. The results show that the stress wave propagates from top to bottom of block......
of 7B04 aluminum alloy under different stresses JIAN Hai-gen, JIANG Feng, WEN Kang, HUANG Hong-feng, WEI Li-li, JIANG Long (School of Materials Science and Engineering, Central South University, Changsha... of crack initiation and propagation in this kind of alloy were revealed. The results show that the fatigue cracks usually initiate at or near the free surfaces of the specimen. And with the increase......
of particulate composites based on a body-centered cubic Mg-Li alloy containing boron[J]. Scripta Metallurgica, 1989, 23(1): 137-140. [10] 乐启炽, 崔建忠, 李红斌, 等. Mg-Li合金研究最新进展及其应用[J]. 材料导报, 2003, 12(12): 1-4...化合物强化镁锂基合金的研究[D]. 长沙: 中南大学粉末冶金研究院, 2007: 30-39. ZHOU Ping. Mg-Li based alloy reinforced by boron compound[D]. Changsha: Central South University. Powder Metallurgy Research Institute, 2007: 30-39......
, respectively, which are evidently higher than that of the standard Mg-Nd-Zn-Zr alloy. Key words: Mg-Nd-Zn-Zr alloys; Y; microstructure; heat treatment; mechanical properties 我国于20世纪80年代开发了含Nd的稀土镁合金... cast Mg-yNd-xZn-Zr alloy[J]. Materials Science and Engineering A, 2008, 496(1/2): 177-188. [4] FU Peng-huai, PENG Li-ming, JIANG Hai-yan, et al. Effects of heat treatments on the microstructures......
on weld structure of large thickness Ti-6Al-4V alloy with narrow-gap TIG welding method SUN Qing-jie1, GUO Ning1, HU Hai-feng2, FENG Ji-cai1 (1. Shandong Provincial Laboratory of Special Welding... experiment was conducted directing at the 56 mm-thickness Ti-6Al-4V titanium alloy. Afterwards, an analysis was taken to compare each weld joint microstructure by means of metallographic microscope......
-long, XU Lei, YE Jing-tao, HU Wei-min. Research on microstructure of deforming nickel-aluminium braze alloy[J]. Chinese Journal of Rare Metals, 2008, 32(4): 420-424. [4] 刘 平, 任凤章, 贾淑果. 铜合金及其应用[M]. 北京...:TG 27 文献标志码:A Microstructures and properties of micro-alloyed nickel-aluminium bronze ingot by scandium......
