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LY12铝合金表面电火花强化层组织与性能研究 苏勋家1,谷建荣2,李平1,侯根良1,郭锋1 (1.第二炮兵工程学院,西安,710025;2.中国人民解放军96633部队,北京,100096) 摘要:采用自制电火花强化机,以TC4合金作为电极,在空气介质中对LY12铝合金进行了表面强化.分别用扫描电镜,电子能谱分析仪与X射线衍射仪对强化层的组织,成分与结构进行了分析与研究;用显微硬度计与磨损试验机等实验设备对强化层的显微硬度与耐磨性进行了测量与分析.结果表明:强化层连续,致密,与基体之间呈冶金结合;主要由钛-铝金属间化合物和钛或铝的氮,氧化物相组成,显微硬度可达HV596;在干摩擦磨损实验条件下,强化后试样磨损体积仅为未强化试样的1/7.铝合金表面性能得到显著改善. 关键词:铝合金; TC4合金; 电火花; 表面强化; aluminum alloy; TC4 titanium......
Portevin-Le Chatelier effect in Al-Zn-Mg-Cu-Zr aluminum alloy CHEN Jun-zhou(陈军洲)1, 2, ZHEN Liang(甄良)1, FAN Li-wei(樊立伟)3, YANG Shou-jie(杨守杰)2, DAI Sheng-long(戴圣龙)2, SHAO Wen-zhu(邵文柱)1...; Abstract: Portevin-Le Chatelier (PLC) effect in a severely cold-rolled Al-Zn-Mg-Cu-Zr aluminum alloy (AA7055 type) plate before and after......
Dynamic softening behaviors of 7075 aluminum alloy QUAN Guo-zheng(权国政)1, LIU Ke-wei(刘克威)1, ZHOU Jie(周 杰)1, CHEN Bin(陈 斌)2 1. School of Material Science and Engineering, Chongqing University... hot deformation of 7075 aluminum alloy were studied by isothermal hot compression tested at temperatures of 250, 300, 350, 400 and 450 ℃ and strain rates of 0.01, 0.1, 1 and 10 s-1 on Gleeble1500......
Defect analysis of complex-shape aluminum alloy forging SHAN De-bin(单德彬), ZHANG Yan-qiu(张艳秋), WANG Yong(王 勇), XU Fu-chang(徐福昌), XU Wen-chen(徐文臣), L? Yan(吕 炎) School of Materials Science... aluminum alloy with complex shape. The complexity of forging is easy to lead to the occurrence of the defects, such as underfilling, folding, metal flow lines disturbance and fibre breaking. The reasons......
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Investigation of Out-Phase Electromagnetic Casting of Aluminum Alloy () 摘要:The influences of out-phase electromagnetic field on the as-cast structure of horizontal direct chill casting aluminum... changes from columnar grains to equiaxed grains and grain size decreases. 关键词:out-phase electromagnetic field; aluminum alloy; horizontal direct chill casting; as-cast structure; [全文内容正在添加中] ......
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composite coatings on LY12 aluminum alloy WANG Yu-jie, ZHANG Peng, DU Yun-hui, LI Ling-lei, LI Nan-nan, LI Qiang (School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University... of microarc oxidation coatings on 2017A aluminum alloy substrate[J]. Journal of Alloys & Compound, 2010, 504(2): 519-526. [2] 蒋百灵, 刘东杰. 制约微弧氧化技术应用开发的几个科学问题[J]. 中国有色金属学报, 2011, 21(10): 2402-2407......
Subsequent yield loci of 5754O aluminum alloy sheet WANG Hai-bo(王海波), WAN Min(万 敏), WU Xiang-dong(吴向东), YAN Yu(阎 昱) School of Mechanical Engineering and Automation, Beihang University... the subsequent yield locus of sheet metal was established. With this method, the subsequent yield loci of 5754O aluminum alloy sheet were obtained under complex loading paths. Theoretical subsequent yield......