Mechanical responses of additively manufactured MoSiBTiC alloy under tensile and compressive loadings
Mechanical responses of additively manufactured MoSiBTiC alloy under tensile and compressive loadings
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增材制造的 MoSiBTiC 合金在拉伸和压缩载荷下的机械响应
DOI：
10.1016/j.msea.2022.142848
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Yoshimi Kyosuke
中科院分区：
文献类型：
--
作者：
Takeda Tomo;Zhou Weiwei;Nomura Naoyuki;Yoshimi Kyosuke
采用激光粉末床熔融（L-PBF）增材制造方法制备了一种添加TiC的Mo-Si-B合金（MoSiBTiC合金），研究了其拉伸和压缩性能。采用L-PBF法制备MoSiBTiC合金试样，在热等静压（HIP）处理前后进行室温四点弯曲试验。根据弯曲试验数据，考虑非线性应力-应变关系，确定拉伸和压缩的弹性和强度特性。显微组织观察，元素组成分析，并使用扫描电子显微镜（SEM），能量色散X射线光谱（EDS）和X射线衍射（XRD）相鉴定。HIP处理减少了L-PBF处理的MoSiBTiC合金中的工艺引起的缺陷，并导致其弹性和强度性能的改善。合金在拉伸和压缩状态下的宏观响应存在明显差异，这是由微观缺陷行为引起的。
The present study characterizes the tensile and compressive behaviors of a TiC-added Mo–Si–B alloy (MoSiBTiC alloy) fabricated by the laser powder bed fusion (L-PBF) method of additive manufacturing. Four-point bending tests were conducted at room temperature on MoSiBTiC alloy specimens prepared from L-PBF builds, before and after hot isostatic pressing (HIP) treatments. The elastic and strength properties in tension and compression were determined based on the bending test data, by considering nonlinear stress–strain relations. Microstructural observations, elemental composition analyses, and phase identifications were performed using scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS), and X-ray diffraction (XRD). The HIP treatments reduced process-induced defects in the L-PBF-processed MoSiBTiC alloy and resulted in improvements in their elastic and strength properties. A distinct difference was observed in the macroscale responses of the alloy under tension and compression, which was attributed to the defect behavior at microscale.
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DOI：
10.2514/5.9781624104893.0579.0608
发表时间：
2018
期刊：
--
影响因子：
--
作者：
J. C. Williams
通讯作者：
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影响因子：
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作者：
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影响因子：
11
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影响因子：
2.6
作者：
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通讯作者：
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循环加载下微裂纹的张开/闭合对二维 C-SiC 复合材料非线性行为的影响
影响因子：
4.2
作者：
J. Morvan;S. Baste
通讯作者：
S. Baste