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.
关键词
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
Key words
Mg/Ti bimetal composites/pyramidal lattice structure/optimization/additive manufacturing/failure strength/finite element analysis
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基金项目
Graduate Scientific Research and Innovation Foundation of Chongqing,China(CYB21005)
维普
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