Influence of coarse grain particles on mechanical properties and fracture behavior in multi-modal Al-based metal matrix composites
Influence of coarse grain particles on mechanical properties and fracture behavior in multi-modal Al-based metal matrix composites
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粗晶颗粒对多模态铝基金属基复合材料力学性能和断裂行为的影响
DOI：
10.1016/j.powtec.2021.09.027
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发表时间：
2021-12
影响因子：
5.2
通讯作者：
Liu Jing
中科院分区：
文献类型：
--
作者：
Wu Chu;ong;Shen Shuai;Li Yingyu;Luo Guoqiang;Shen Qiang;Gan Zhanghua;Liu Jing
我们报道了通过冷冻研磨和等离子体激活烧结合成的具有三种类型粗晶粒（CG、AA7075 粉末-1 μm、AA7075 粉末-10 μm 和冷冻研磨的 AA7075 粉末）的多峰 AA7075-B4C 复合材料的断裂行为。我们的结果表明，类型（粒径）和重量分数可能会影响 CG 的分布，进而显着影响多模态复合材料的断裂行为。在 1 μm AA7075 粉末附近发现了多个空隙，导致即使屈服强度较低，塑性也有限。 AA7075 粉末 10 μm (25%) 可以均匀地分布在复合材料中，从而产生高屈服强度 (712 ± 24 MPa) 和约 7.7% 的塑性。在添加低温研磨的 AA7075 粉末固结过程中发生局部晶粒生长。注意到一旦在复合材料中检测到 CG 的连续分布，屈服强度就会急剧下降。 CGs可以通过延缓变形过程中微裂纹的扩展来增强塑性。
We reported the fracture behavior of multimodal AA7075-B4C composites with three types of coarse grains (CG, AA7075 powder-1 μm, AA7075 powder-10 μm, and as-cryomilled AA7075 powder) synthesized via cryomilling and plasma activated sintering. Our results indicated that the type (particle size) and weight fraction could affect the distribution of CGs, which in turn significantly affect the fracture behavior of multi-modal composites. Multiple voids were found in the vicinity of AA7075 powder-1 μm, leading to a limited plasticity even with a lower yield strength. AA7075 powder-10 μm (25%) could distribute homogeneously in the composites, resulting in a high yield strength (712 ± 24 MPa) with the plasticity of ~7.7%. The localized grain growth occurred during consolidation with addition of as-cryomilled AA7075 powder. Noted that once the continuous distribution of CGs were detected in the composites, the yield strength decrease dramatically. The CGs could enhance the plasticity by retarding the propagation of micro-cracks during deformation.
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影响因子：
2.6
作者：
Lin Jiang;Kaka Ma;Hanry Yang;Meijuan Li;E. Lavernia;J. Schoenung
通讯作者：
Lin Jiang;Kaka Ma;Hanry Yang;Meijuan Li;E. Lavernia;J. Schoenung
影响因子：
5.2
作者：
Chuandong Wu;G. Luo;Jian Zhang;Q. Shen;Z. Gan;Jing Liu;Lianmeng Zhang
通讯作者：
Chuandong Wu;G. Luo;Jian Zhang;Q. Shen;Z. Gan;Jing Liu;Lianmeng Zhang
热处理过程中 B4C 颗粒尺寸对纳米结构 Al 基体微观结构演变和力学行为的影响
影响因子：
5.2
作者：
Wu Chu;ong;Lu Yuehui;Luo Guoqiang;Shen Qiang;Gan Zhanghua;Liu Jing
通讯作者：
Liu Jing
DOI：
10.1016/j.msea.2021.141580
发表时间：
2021-06-16
影响因子：
6.4
作者：
Hosseiny, Niloofar;Shabani, Ali;Toroghinejad, Mohammad Reza
通讯作者：
Toroghinejad, Mohammad Reza
影响因子：
6
作者：
Jichun Ye;B. Han;Zonghoon Lee;B. Ahn;S. Nutt;J. Schoenung
通讯作者：
Jichun Ye;B. Han;Zonghoon Lee;B. Ahn;S. Nutt;J. Schoenung