Microstructure and mechanical properties comparison of ferritic/martensitic steel fabricated by wrought and selective laser melting
Microstructure and mechanical properties comparison of ferritic/martensitic steel fabricated by wrought and selective laser melting
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DOI：
10.1016/j.matlet.2023.133844
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发表时间：
2023-03
影响因子：
3
通讯作者：
Shengyi Li;W. Qiu;T. Zhao;A. Li;Yang Tan;Pan Wen;Chuan Wu;J. Du;Jun Tang
中科院分区：
文献类型：
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作者：
Shengyi Li;W. Qiu;T. Zhao;A. Li;Yang Tan;Pan Wen;Chuan Wu;J. Du;Jun Tang
还原活化铁素体/马氏体(RAFM)钢具有低活性和高导热系数等特点，被认为是未来聚变反应堆最有前途的结构材料。然而，内部水冷管结构复杂，增加了常规加工的难度。为此，采用选择性激光熔凝(SLM)技术成功地制备了高强度、高韧性的RAFM钢。与锻造材料相比，SLM制备的试件在力学性能上显示出明显的优势。此外，水平方向的强度显著增强，几乎没有延性损失。然而，垂直方向的强度增加是以延性为代价的。这项工作为核聚变结构材料的制备提供了一种潜在的方法。
Reduction activated ferrite/martensitic (RAFM) steel has been identified as the most promising structural material for future fusion reactors due to its properties such as low activation and high thermal conductivity. However, the complex internal water cooling tubing increases the difficulty of conventional processing. Herein, RAFM steel with high strength and excellent ductility was successfully fabricated by selective laser melting (SLM) technology. Compared with wrought materials, the SLM-fabricated specimens exhibit significant superiority in mechanical properties. Furthermore, the strength is prominently enhanced in the horizontal direction, with almost no loss of ductility. However, the strength gain in the vertical direction is at the expense of ductility. This work provides a potential method for the preparation of structural materials for nuclear fusion.