Phase transformation dynamics guided alloy development for additive manufacturing
Phase transformation dynamics guided alloy development for additive manufacturing
复制标题
用于增材制造的相变动力学引导合金开发
DOI：
10.1016/j.addma.2022.103068
复制
发表时间：
2022
影响因子：
11
通讯作者：
Chen, Lianyi
中科院分区：
文献类型：
--
作者：
Guo, Qilin;Qu, Minglei;Chuang, Chihpin Andrew;Xiong, Lianghua;Nabaa, Ali;Young, Zachary A.;Ren, Yang;Kenesei, Peter;Zhang, Fan;Chen, Lianyi
基于融合的附加制造技术能够制造传统制造方法无法实现的几何和成分复杂的零件。然而，不均匀和远不平衡的加热/冷却条件对在印刷零件中持续获得所需的相构成了巨大的挑战。在这里，我们报道了由高速、高能、高分辨率的原位X射线衍射仪揭示的相变动力学指导下的马氏体不锈钢的发展。这种开发的不锈钢在很宽的冷却速度范围内(102-107℃/S)一致地形成所需的完全马氏体组织，这使得直接打印具有完全马氏体组织的零件成为可能。印制材料的屈服强度为1157±223 Mpa，与沉淀硬化热处理后的锻造材料相当。这种印刷性能归因于添加剂制造中的本征热处理过程中形成的完全马氏体组织和细小的析出物。这里展示的相变动力学指导的合金开发策略为开发专门用于添加剂制造的可靠、高性能合金开辟了道路。
Fusion-based additive manufacturing technologies enable the fabrication of geometrically and compositionally complex parts unachievable by conventional manufacturing methods. However, the non-uniform and far-from-equilibrium heating/cooling conditions pose a significant challenge to consistently obtaining desirable phases in the as-printed parts. Here we report a martensite stainless steel development guided by phase transformation dynamics revealed by in-situ high-speed, high-energy, high-resolution X-ray diffraction. This developed stainless steel consistently forms desired fully martensitic structure across a wide range of cooling rates (102–107℃/s), which enables direct printing of parts with fully martensitic structure. The as-printed material exhibits a yield strength of 1157 ± 23 MPa, comparable to its wrought counterpart after precipitation-hardening heat-treatment. The as-printed property is attributed to the fully martensitic structure and the fine precipitates formed during the intrinsic heat treatment in additive manufacturing. The phase transformation dynamics guided alloy development strategy demonstrated here opens the path for developing reliable, high-performance alloys specific for additive manufacturing.
登录
查看更多内容
影响因子：
11
作者：
Alnajjar, Michella;Christien, Frederic;Bosch, Cedric
通讯作者：
Bosch, Cedric
DOI：
10.1007/s11661-020-05703-6
发表时间：
2020-05
影响因子：
2.8
作者：
Lass, Eric A.;Zhang, Fan;Campbell, Carelyn E.
通讯作者：
Campbell, Carelyn E.
影响因子：
6.1
作者：
Ilavsky, Jan;Zhang, Fan;Allen, Andrew J.
通讯作者：
Allen, Andrew J.
影响因子：
4.6
作者：
Zhao C;Fezzaa K;Cunningham RW;Wen H;De Carlo F;Chen L;Rollett AD;Sun T
通讯作者：
Sun T
DED 工艺参数对 DED 沉积的 17-4 PH SS 冶金特性的影响
DOI：
10.1016/j.cirpj.2020.07.007
发表时间：
2020
影响因子：
4.8
作者：
I. Mathoho;E. Akinlabi;N. Arthur;M. Tlotleng
通讯作者：
M. Tlotleng