Anisotropic mechanical behavior of biomedical Ti-13Nb-13Zr alloy manufactured by selective laser melting
Anisotropic mechanical behavior of biomedical Ti-13Nb-13Zr alloy manufactured by selective laser melting
复制标题
选区激光熔化制备生物医用Ti-13Nb-13Zr合金的各向异性力学行为
DOI：
10.1016/j.jallcom.2018.05.179
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发表时间：
2018-09
影响因子：
6.2
通讯作者：
Mei Fangsheng
中科院分区：
文献类型：
--
作者：
Zhou Libo;Yuan Tiechui;Li Ruidi;Tang Jianzhong;Wang Minbo;Mei Fangsheng
本研究首次通过选择性激光熔化（SLM）研究了 Ti-13Nb-13Zr 合金的各向异性微观结构和力学性能。由于前一层的重熔和热梯度的作用，原有的β柱状晶在构建方向上生长，而扫描方向主要由较细的等轴晶组成，导致水平截面的纳米硬度（5.18±0.2GPa）高于垂直截面（4.63±0.2GPa）。由于垂直截面孪晶的增强，制成的纵向样品的极限抗拉强度（UTS）（1020±15MPa）和屈服强度（YS）（794.63±15MPa）略高于横向样品（UTS为996±13MPa，YS为794±15MPa）。 SLM加工的样品由于完全熔化和反复重熔而没有出现元素偏析，并且由于SLM工艺的高冷却速率而细化了微观结构，使得拉伸强度优于粉末冶金获得的样品（750MPa）。由于柱状晶形态，在构建方向上，破坏可以被推迟，这导致纵向样品（6.5±0.3%）比横向样品（5±0.3%）表现出更高的延展性。
The anisotropic microstructure and mechanical properties of Ti-13Nb-13Zr alloy via selective laser melting (SLM) are investigated for the first time in this study. Owing to the re-melting of the previous layer(s) and the thermal gradient, the prior β columnar grains grow in the building direction while scanning direction are mainly consist of finer equiaxed grains, which result in the higher nanohardness in horizontal section (5.18 ± 0.2 GPa) than in vertical section (4.63 ± 0.2 GPa). The as-fabricated longitudinal samples show slight higher ultimate tensile strength (UTS) (1020 ± 15 MPa) and yield strength (YS) (794.63 ± 15 MPa) than transverse samples (UTS of 996 ± 13 MPa and YS of 794 ± 15 MPa) because of the enhancement of twins in vertical section. The SLM processed samples show no element segregation because of the complete melting and repeatedly re-melting, and the refined microstructure due to the high cooling rate in SLM process, which make the tensile strength superior higher than those obtained by powder metallurgy (750 MPa). Owing to the columnar grain morphology, in building direction, the failure can be postponed, which results in the longitudinal samples (6.5 ± 0.3%) exhibit higher ductility than transverse samples (5 ± 0.3%).
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影响因子：
8.4
作者：
Dimic, Ivana;Cvijovic-Alagic, Ivana;Bugarski, Branko
通讯作者：
Bugarski, Branko
DOI：
10.1016/j.msec.2012.01.022
发表时间：
2012-05
期刊：
Materials Science and Engineering: C
影响因子：
--
作者：
K. Suresh;M. Geetha;C. Richard;J. Landoulsi;H. Ramasawmy;S. Suwas;R. Asokamani
通讯作者：
K. Suresh;M. Geetha;C. Richard;J. Landoulsi;H. Ramasawmy;S. Suwas;R. Asokamani
DOI：
10.1016/j.msea.2017.09.083
发表时间：
2017-11
影响因子：
6.4
作者：
Li-bo Zhou;Tiechui Yuan;Rui-di Li;Jianzhong Tang;Guohua Wang;Guo Kaixuan
通讯作者：
Li-bo Zhou;Tiechui Yuan;Rui-di Li;Jianzhong Tang;Guohua Wang;Guo Kaixuan
选区激光熔化与电子束熔化Ti-6Al-4V的显微组织和力学性能比较
影响因子：
8.4
作者：
Zhao, Xiaoli;Li, Shujun;Murr, Lawrence E.
通讯作者：
Murr, Lawrence E.
影响因子：
6
作者：
Lai‐Chang Zhang;D. Klemm;J. Eckert;Y. Hao;T. Sercombe
通讯作者：
Lai‐Chang Zhang;D. Klemm;J. Eckert;Y. Hao;T. Sercombe