首页|增材制造钛基金字塔点阵结构对镁/钛双金属复合材料界面强化的优化

增材制造钛基金字塔点阵结构对镁/钛双金属复合材料界面强化的优化

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采用超声辅助固-液复合铸造的方法,通过在界面处采用增材制造的钛基金字塔型点阵材料制备镁/钛异种双金属复合材料.采用正交法对点阵结构参数进行优化.结果表明,优化后的点阵结构参数为:杆直径(1 mm,杆长与杆直径比(l/d)3,上节点和下节点直径与杆直径比(d1/d,d2/d)均为2.5,其中l/d是影响接头失效强度的最显著因素,最优点阵结构参数下镁/钛双金属接头的失效强度为77.3 MPa.实验结果和有限元分析表明:随着点阵结构长径比的增加,镁/钛双金属接头的失效强度先增加后减小,当长径比为3时,失效强度达到最大.
Optimization of additive manufactured Ti-based pyramidal lattice structure applied to interface strengthening of Mg/Ti bimetal composites
Mg/Ti bimetal composites were fabricated by ultrasonic-assisted solid-liquid compound casting with an additively manufactured Ti-based pyramidal lattice structure at the interface.The Taguchi method was carried out to optimize the lattice parameters.The optimized geometric parameters include:the strut diameter(d)is 1 mm,the ratio of strut length to diameter(l/d)is 3,and the ratios of the upper and lower node to diameter(d1/d and d2/d)are 2.5 and 2.5,respectively.The ratio of strut length to diameter is the most significant factor affecting failure strength.The failure strength of the Mg/Ti bimetal joint with the optimized lattice structure is 77.3 MPa.Experimental and simulated results show that the failure strength increases first and then decreases with the increase of l/d,and it reaches the peak value when l/d is 3.

Mg/Ti bimetal compositespyramidal lattice structureoptimizationadditive manufacturingfailure strengthfinite element analysis

吴远兵、赵建华、彭韦力、辜诚、程进、王亚军

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重庆大学材料科学与工程学院,重庆 400045

重庆大学国家镁合金工程研究中心,重庆 400044

镁/钛双金属复合材料 金字塔点阵结构 优化 增材制造 失效强度 有限元分析

Graduate Scientific Research and Innovation Foundation of Chongqing,China国家自然科学基金中国博士后科学基金

CYB21005518750622021M700567

2024

10.1016/S1003-6326(23)66438-6

中国有色金属学报(英文版)
中国有色金属学会

中国有色金属学报(英文版)

CSTPCD
影响因子：1.183
ISSN：1003-6326
年,卷(期)：2024.34(3)
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