50% Si/Al复合材料微区不均匀性表征及其对力学性能的影响
发布时间:2021-12-16 20:53
采用粉末冶金法制备50%Si/Al(质量分数,下同)复合材料,利用金相显微镜(OM)、万能试验机和扫描电镜(SEM)对材料的组织不均匀性及性能稳定性进行了研究。结果表明:在不同混料条件下,50%Si/Al复合材料能够轻易达到宏观均匀,组织之间的区别在于微区不均匀性。对于50%Si/Al复合材料而言,微区域大小为75μm×70μm所反映的组织微区不均匀性规律与断裂韧性稳定性的变化趋势相吻合。而断裂韧性的稳定性与组织的微区不均匀性相关,因此选取大小为75μm×70μm的微区域能够较好地反映材料的微区不均匀性。相比较而言,4种不同混料工艺中,最佳混料工艺为混料24 h,球料比1∶1。组织微区不均匀性对于断裂韧性稳定性影响最为突出,对抗弯及抗拉强度稳定性的影响并不明显。
【文章来源】:稀有金属. 2016,40(10)北大核心EICSCD
【文章页数】:7 页
【文章目录】:
1 实验
2 结果与讨论
2.1 混料均匀性的表征
2.2 力学性能
2.3 断裂机制
3 结论
【参考文献】:
期刊论文
[1]Microstructural evolution and mechanical properties of in situ TiB2/Al composites under high-intensity ultrasound[J]. Cun-Guang Chen,Ji Luo,Zhi-Meng Guo,Wei-Wei Yang,Jun Chen. Rare Metals. 2015(03)
[2]Mechanical Properties of a Low-thermal-expansion Aluminum/Silicon Composite Produced by Powder Metallurgy[J]. Y.Q.Liu,S.H.Wei,J.Z.Fan,Z.L.Ma,T.Zuo. Journal of Materials Science & Technology. 2014(04)
[3]Interface Characterization of the SiCp/Al Composites Made by Powder Metallurgy[J]. Jianzhong FAN; Kui ZHANG; Likai SH and Shaoming ZHANG (General Research Institute for Non-ferrous Metals, Beijing 100088, China). Journal of Materials Science & Technology. 1999(02)
本文编号:3538802
【文章来源】:稀有金属. 2016,40(10)北大核心EICSCD
【文章页数】:7 页
【文章目录】:
1 实验
2 结果与讨论
2.1 混料均匀性的表征
2.2 力学性能
2.3 断裂机制
3 结论
【参考文献】:
期刊论文
[1]Microstructural evolution and mechanical properties of in situ TiB2/Al composites under high-intensity ultrasound[J]. Cun-Guang Chen,Ji Luo,Zhi-Meng Guo,Wei-Wei Yang,Jun Chen. Rare Metals. 2015(03)
[2]Mechanical Properties of a Low-thermal-expansion Aluminum/Silicon Composite Produced by Powder Metallurgy[J]. Y.Q.Liu,S.H.Wei,J.Z.Fan,Z.L.Ma,T.Zuo. Journal of Materials Science & Technology. 2014(04)
[3]Interface Characterization of the SiCp/Al Composites Made by Powder Metallurgy[J]. Jianzhong FAN; Kui ZHANG; Likai SH and Shaoming ZHANG (General Research Institute for Non-ferrous Metals, Beijing 100088, China). Journal of Materials Science & Technology. 1999(02)
本文编号:3538802
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