文献类型：期刊文献

英文题名：Multi-material laser powder bed fusion additive manufacturing of a bimodal laminate heterostructure with Cu-base and Ni-base alloys

作者：Yan, Liming[1];Li, Bo[1,2,3];Zhang, Jianrui[1];Xuan, Fuzhen[1,2]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[2]Shanghai Collaborat Innovat Ctr High End Equipment, Shanghai 200237, Peoples R China;[3]East China Univ Sci & Technol, Addit Mfg & Intelligent Equipment Res Inst, Shanghai 200237, Peoples R China

年份：2025

卷号：63

起止页码：58

外文期刊名：CIRP JOURNAL OF MANUFACTURING SCIENCE AND TECHNOLOGY

收录：;EI(收录号：20253719161996);WOS:【SCI-EXPANDED(收录号:WOS:001573923200001)】；

基金：The work is sponsored by Pre Research Project of Civil Aerospace Technology (Grant No. D020301) and National Natural Science Foundation of China (Grant No. 52175140).

语种：英文

外文关键词：Additive manufacturing; Multi-material laser powder bed fusion; Heterogeneous structure; Strength-ductility synergy

摘要：A bimodal laminate heterostructure consisting of alternating copper-base (CuCrZr) and nickel-base (Hastelloy X) alloy layers was carefully fabricated via multi-material laser powder bed fusion (MM-LPBF) additive manufacturing approach, employing a custom-designed multi-powder delivery device system and proprietary process-control software. The heterostructure shows a hierarchical architecture with periodically alternating coarse-grained (predominantly Hastelloy X) and fine-grained (primarily CuCrZr) layers, interconnected by transition zones containing mixed grain morphologies. The heterostructural material demonstrates exceptional mechanical performance under building-direction loading, achieving a yield strength of 674.2 MPa, ultimate tensile strength of 756.4 MPa (similar to 92 % of monolithic LPBF-processed Hastelloy X), and elongation of 19.9 %. Crystal plasticity simulations elucidate deformation coordination and strength-ductility synergy mechanisms, while microstructural characterization confirms the bimodal grain structure originates from the LPBF-laser-induced melt pool dynamics and heterogeneous nucleation during the rapid solidification. This study establishes MM-LPBF as a viable approach for manufacturing high-performance, architecturally graded multi-material systems.