Microstructure evolution for isothermal sintering of binder jet 3D printed alloy 625 above and below the solidus temperature
Microstructure evolution for isothermal sintering of binder jet 3D printed alloy 625 above and below the solidus temperature
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粘合剂喷射 3D 打印合金 625 在固相线温度之上和之下等温烧结的微观结构演变
DOI：
10.1016/j.addma.2021.102276
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发表时间：
2021
影响因子：
11
通讯作者：
Chmielus, Markus
中科院分区：
文献类型：
--
作者：
Zheng, Chuyuan;Mostafaei, Amir;de Vecchis, Pierangeli Rodriguez;Nettleship, Ian;Chmielus, Markus
与基于光束的熔化方法相比，粘合剂喷射3D打印耗时更少，打印材料更不容易产生残余应力。然而，粘合剂喷射印刷通常含有残余孔隙，其在无压烧结中幸存并限制金属的机械性能，包括疲劳强度和延展性。在这项工作中，气体雾化镍基高温合金625粉末具有三种不同的粒度分布的粘合剂喷射打印，随后等温烧结在亚固相线和超固相线温度。个别功能进行测量的二维截面和孔径分布频率绘制，以揭示亚固相线和超固相线烧结之间的微观结构演变的差异。超固相线液相烧结被认为在液相的表面张力下促进了颗粒重排，导致有利于随后致密化和更高最终密度的均匀微观结构。此外，具有宽粒度分布的印刷粉末不仅达到约52%的高绿色密度，而且还达到99%以上的最终密度。
When compared to beam-based melting methods, binder jet 3D printing is less time consuming, and the printed material is less prone to residual stresses. However, binder jet printing often contains remnant porosity that survives pressureless sintering and limits the mechanical properties of metals including fatigue strength and ductility. In this work, gas atomized nickel-based superalloy 625 powders with three different particle size distributions are binder jet printed and subsequently isothermally sintered at subsolidus and supersolidus temperatures. Individual feature measurements were conducted on two-dimensional sections and pore size distribution frequencies were plotted to reveal the difference in microstructural evolution between subsolidus and supersolidus sintering. Supersolidus liquid phase sintering is thought to have facilitated particle rearrangement under the surface tension of the liquid phase, resulting in a homogeneous microstructure that favored subsequent densification and higher final density. Additionally, printed powder with a wide particle size distribution not only reached high green density of ~52%, but also achieved final densities above 99%.
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影响因子：
1.2
作者：
Mostafaei, Amir;Hughes, Eamonn T;Hilla, Colleen;Stevens, Erica L;Chmielus, Markus
通讯作者：
Chmielus, Markus
影响因子：
3
作者：
Caputo, M. P.;Solomon, C. V.
通讯作者：
Solomon, C. V.
ZrO2–3 mol%Y2O3 等温烧结过程中非均相微观结构演化的表征
影响因子：
3.9
作者：
I. Nettleship;Tian;K. Ewsuk
通讯作者：
K. Ewsuk
DOI：
10.1016/j.msec.2019.04.011
发表时间：
2019-09
期刊：
Materials science & engineering. C, Materials for biological applications
影响因子：
--
作者：
A. Mostafaei;Pierangeli Rodriguez De Vecchis;Michael J. Buckenmeyer;S. R. Wasule;B. Brown;M. Chmielus
通讯作者：
A. Mostafaei;Pierangeli Rodriguez De Vecchis;Michael J. Buckenmeyer;S. R. Wasule;B. Brown;M. Chmielus
影响因子：
8.4
作者：
Levy, Asaf;Miriyev, Aslan;Frage, Nachum
通讯作者：
Frage, Nachum