华中科大魏青松教授团队丨镍基高温合金增材制造过程中裂纹类型、机理及抑制方法综述
研究现状
微裂纹缺陷是HEB-AM成形镍基高温合金中常见的缺陷，严重制约着成形零部件的力学性能，是必须予以解决的问题。由于HEB-AM过程始终伴随着较高的热应力，合金化程度高的镍基高温合金易产生显微偏析。受制于成形过程晶粒外延生长特性，在热影响区容易萌生裂纹，并沿着晶界扩展。针对镍基高温合金在HEB-AM过程中的微裂纹形成原因，国内外也做了一些研究。总的来说镍基高温合金在SLM成形过程中微裂纹的萌发和扩展归因于材料本身的冶金性能和过大的热应力。
激上。
图2 高能束增材制造技术加工镍基高温合金的裂纹抑制方法
研究难点或瓶颈
镍基高温合金在600℃以上仍保持较高的强度、良好的抗热腐蚀性、抗热氧化性及良好的组织稳定性，是航天航空发动机热端零部件中不可取代的材料。然而，传统方法难以制造复杂结构的镍基高温合金，HEB-AM是解决镍基高温合金难制造问题的核心技术。然而，HEB-AM成形镍基高温合金尚处于起步阶段，且大多数研究致力于工艺参数优化及热处理对组织影响，HEB-AM成形镍基高温合金的高温性能差和微裂纹缺陷还没有完全解决，镍基高温合金成分优化对成形质量的方面的研究更是缺乏。
图3 裂纹产生的原因及抑制裂纹的机理和方法总结
未来展望
(3) 随着HEB-AM技术的深入发展，大尺寸复杂结构零部件的整体制造被提上日程，这将需要多激光协同作业。目前缺乏多激光成形镍基高温合金的相应研究，下一步有必要加大对多激光大台面成形镍基高温合金工艺及设备方面的研究，为整体制造大尺寸复杂零部件提供技术支持。
论文原文链接:
doi.org/10.1016/j.cjmeam.2022.100055
https://www.sciencedirect.com/science/article/pii/S2772665722000393
Qingsong Wei, Yin Xie, Qing Teng, Muyu Shen, Shanshan Sun, Chao Cai. Crack Types, Mechanisms, and Suppression Methods during High-energy Beam Additive Manufacturing of Nickel-based Superalloys: A Review. Chinese Journal of Mechanical Engineering: Additive Manufacturing Frontiers, 2022, 1(4): 100055.
团队带头人介绍
作者介绍
近年团队发表文章
[1] Yin Xie, Qing Teng, Muyu Shen, Zhenyu Zhang, Yu Wei, Chao Cai* & Qingsong Wei*. The role of overlap region width in multi-laser powder bed fusion of Hastelloy X superalloy[J]. Virtual and Physical Prototyping, 2022, 18(1): 2142802.
[2] Yanbing Liu, Jikang Li, Ke Xu, Tan Cheng, Danlei Zhao, Wei Li, Qing Teng, Qingsong Wei*. An optimized scanning strategy to mitigate excessive heat accumulation caused by short scanning lines in laser powder bed fusion process[J]. Additive Manufacturing, 2022, 60(12): 103256.
[3] Zhao Danlei, Han Changjun, Peng Bo, Cheng Tan, Fan Junxiang, Yang Lei, Chen Lili, Wei Qingsong*. Corrosion fatigue behavior and anti-fatigue mechanisms of an additively manufactured biodegradable zinc-magnesium gyroid scaffold, Bioactivity and in-Situ Bone Regeneration Capability[J]. Acta Biomaterialia, 2022, 153: 614-629.
[4] Li Jikang, Zhang Zhenwu, Xu Wenhe, Yang Yuanqi, Xue Pengju, Teng Qing, Cai Chao, Li Wei, Wei Qingsong*. Hot isostatic pressing of Cu–15Ni–8Sn alloy with suppressed Sn macro-segregation and enhanced mechanical properties[J]. Materials Science and Engineering: A, 2022, 855(5): 143866.
[5] Cheng Tan, Chen Hui, Teng Qing, Wei Qingsong*. In-situ experiment tests and particulate simulations on powder paving process of additive manufacturing[J]. Particuology, 2022, 74: 164-172.
[6] Li Jikang, Zhang Zhenwu, Yang Yuanqi, Cai Chao, Li Wei, Wei Qingsong*. Single-track morphology, crystal orientation and microstructure of DD91 nickel-based single crystal superalloy fabricated by selective laser melting[J]. Chinese Journal of Lasers, 2022, 49(14): 1402103.
[7] Cheng Tan, Chen Hui, Wei Qingsong. The Role of Roller Rotation Pattern in the Spreading Process of Polymer/Short-Fiber Composite Powder in Selective Laser Sintering[J]. Polymers, 2022, 14(12): 2345.
[8] Teng Qing, Xie Yin, Sun Shanshan, Xue Pengju, Long Anping, Wu Tingguang, Cai Chao, Guo Jianzheng, Wei Qingsong*. Understanding on processing temperature-metallographic microstructure-tensile property relationships of third-generation nickel-based superalloy WZ-A3 prepared by hot isostatic pressing[J]. Journal of Alloys and Compounds, 2022, 909: 164668.
[9] Li Jikang, Cheng Tan, Liu Yanbing, Yang Yuanqi, Li Wei, Wei Qingsong. Simultaneously enhanced strength and ductility of Cu-15Ni-8Sn alloy with periodic heterogeneous microstructures fabricated by laser powder bed fusion[J]. Additive Manufacturing, 2022, 54(12): 102726.
[10] Chen Hui, Chen Tan, Li Zhongwei, Wei Qingsong. Is high-speed powder spreading really unfavourable for the part quality of laser powder bed fusion additive manufacturing?[J] Acta Materialia, 2022, 231: 117901.
[11] Li Wei*, Li Jikang, Duan Xianyin, He Chuanyue, Wei Qingsong*, Shi Yusheng. Dislocation-Induced Ultra-High Strength in a Novel Steel Fabricated Using Laser Powder-Bed-Fusion[J]. Materials Science and Engineering: A, 2022, 832: 142502.
[12] Chen Hui, Cheng Tan, Wei Qingsong, Yan Wentao. Dynamics of Short Fiber/Polymer Composite Particles in Paving Process of Additive Manufacturing[J]. Additive Manufacturing, 2021, 47: 102246.
[13] Zhao Danlei, Liang Hang, Han Changjun, Li Jingjing, Liu Jie, Zhou Kun, Yang Cao*, Wei Qingsong*. 3d Printing of a Titanium-Tantalum Gyroid Scaffold with Superb Elastic Admissible Strain, Bioactivity and in-Situ Bone Regeneration Capability[J]. Additive Manufacturing, 2021, 47: 102223.
[14] Sun Shanshan, Teng Qing, Xie Yin, Liu Tong, Ma Rui, Bai Jie, Cai Chao*, Wei Qingsong*. Two-Step Heat Treatment for Laser Powder Bed Fusion of a Nickel-Based Superalloy with Simultaneously Enhanced Tensile Strength and Ductility[J]. Additive Manufacturing, 2021, 46: 102168.
[15] Wang Min, Zhang Yuanjie, Song Bo, Wei Qingsong, Shi Yusheng. Wear Performance and Corrosion Behavior of Nano-Sicp-Reinforced Alsi7mg Composite Prepared by Selective Laser Melting[J]. Acta Metallurgica Sinica, 2021, 34(9): 1213-1222.
[16] Shi Yusheng, Zhang Jinliang, Wen Shifeng, Song Bo, Yan Chunze, Wei Qingsong, Wu Jiamin, Yin Yajun, Zhou Jianxin, Chen Rui, Zhou Wei, Jia Heping, Yang Huanqing, Nan Hai. Additive Manufacturing and Foundry Innovation[J]. China Foundry, 2021, 18(4): 286-295.
[17] Mao Yiwei, Li Jingwen, Li Wei, Cai Daosheng, Wei Qingsong. Binder Jetting Additive Manufacturing of 316l Stainless-Steel Green Parts with High Strength and Low Binder Content: Binder Preparation and Process Optimization[J]. Journal of Materials Processing Technology, 2021, 291: 117020.
[18] Cai Chao, Gao Xiangyun, Teng Qing, Kiran Raj, Liu Jie*, Wei Qingsong*, Shi Yusheng. Hot Isostatic Pressing of a near Α-Ti Alloy: Temperature Optimization, Microstructural Evolution and Mechanical Performance Evaluation[J]. Materials Science and Engineering: A, 2021, 802: 140426.
[19] Teng Qing, Li Shuai, Wei Qingsong, Shi Yusheng. Investigation on the Influence of Heat Treatment on Inconel 718 Fabricated by Selective Laser Melting: Microstructure and High Temperature Tensile Property[J]. Journal of Manufacturing Processes, 2021, 61: 35-45.
