孙权威,杨文美,臧文茁,白倩,徐如雪.选区激光熔化6511SS/GH3536多材料界面特性和力学性能研究[J].表面技术,2024,53(7):116-125. SUN Quanwei,YANG Wenmei,ZANG Wenzhuo,BAI Qian,XU Ruxue.Interfacial Characterization and Mechanical Properties of 6511SS/GH3536 Multi-material Based on Selective Laser Melting[J].Surface Technology,2024,53(7):116-125 |
选区激光熔化6511SS/GH3536多材料界面特性和力学性能研究 |
Interfacial Characterization and Mechanical Properties of 6511SS/GH3536 Multi-material Based on Selective Laser Melting |
投稿时间:2023-02-23 修订日期:2023-06-14 |
DOI:10.16490/j.cnki.issn.1001-3660.2024.07.012 |
中文关键词: 多材料 6511不锈钢 GH3536高温合金 选区激光熔化 界面表征 |
英文关键词:multi-materials 6511 stainless steel GH3536 superalloy selective laser melting interfacial characterization |
基金项目:航空发动机及燃气轮机基础科学中心项目(P2022-B-Ⅳ-012-001);国家自然科学基金(52175381) |
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Author | Institution |
SUN Quanwei | State Key Laboratory of High-Performance Precision Manufacturing, Dalian University of Technology, Liaoning Dalian 116024, China |
YANG Wenmei | State Key Laboratory of High-Performance Precision Manufacturing, Dalian University of Technology, Liaoning Dalian 116024, China |
ZANG Wenzhuo | State Key Laboratory of High-Performance Precision Manufacturing, Dalian University of Technology, Liaoning Dalian 116024, China |
BAI Qian | State Key Laboratory of High-Performance Precision Manufacturing, Dalian University of Technology, Liaoning Dalian 116024, China |
XU Ruxue | AECC Shenyang Engine Research Institute, Shenyang 110015, China |
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中文摘要: |
目的 考虑不同材料对应的最优工艺参数的差异,研究材料的沉积顺序对多材料界面特性的影响,获得界面无明显缺陷、力学性能良好的多材料部件。方法 采用SLM制备6511不锈钢/GH3536高温合金/6511不锈钢多材料试样,研究材料的沉积顺序对界面特性的影响。采用扫描电子显微镜(SEM)、能量色散光谱(EDS)、X射线衍射(XRD)观察界面微观结构和元素分布情况。通过显微硬度和拉伸实验表征界面的力学性能。结果 采用SLM制备的多材料试样的界面无明显缺陷,表明6511不锈钢(6511SS)和GH3536高温合金具有良好的冶金结合特性。由于6511SS与GH3536的最优工艺参数存在差异,GH3536/6511SS的界面扩散区(480 μm)宽于6511SS/GH3536的界面扩散区(330 μm)。6511SS/GH3536扩散区的硬度介于6511SS与GH3536之间,而GH35636/6511SS扩散区的硬度小于6511SS和GH3536的硬度。拉伸实验结果表明,多材料试样在GH3536高温合金处断裂,其极限拉伸强度与GH3536高温合金相当,多材料试样的断裂伸长率低于GH3536高温合金试样的断裂伸长率。结论 证明了采用SLM制备6511不锈钢和GH3536高温合金多材料零件的可行性,揭示了沉积顺序对界面微观结构和力学性能的影响,可为SLM制造多材料零件提供指导和参考。 |
英文摘要: |
Multi-material parts are promising for aerospace, biomedical and automotive applications due to their multi-functionality and environmental adaptability. Selective laser melting (SLM) technology is an effective way to fabricate multi-material parts. Since the material is deposited layer-by-layer in SLM, the interface characterization of the multi-materials directly determines the performance of the part. Therefore, the work aims to study the interfacial characterization and mechanical properties of multi-materials prepared by SLM. |
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