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Titanium cenosphere syntactic foam with coarser cenosphere fabricated by powder metallurgy at lower compaction load

采用粗空心微球低压粉末冶金法制备空心微球复合泡沫钛(英文)
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摘要 Titanium cenosphere syntactic foam of varying relative densities with coarse cenospheres was developed through powder metallurgy route at lower compaction loads. The cold compaction load was varied in the range of 60 to 75 MPa to obtain the foams of different relative densities. A function of cold compaction load between crushing tendency of cenosphere and relative density was investigated. The compressive deformation behavior of these foams was studied, and empirical relationships among plateau stress, elastic modulus, densification strains and energy absorption are formulated considering their practical significance. The performance indices of the developed foam in comparison with dense titanium were studied and it was found that the foam is superior alternative to titanium for engineering applications. 在低压下采用粉末冶金法，使用粗尺寸空心微球制备出不同相对密度的钛空心微球复合泡沫材料。在压力为60～70 MPa，通过冷压制备得到不同相对密度的泡沫钛。研究冷压压力与空心微球破碎倾向和相对密度的函数关系。研究制备的泡沫钛材料的压缩变形行为，考虑到实际应用，建立了平台应力、弹性模量、致密化应变和能量吸收之间的经验关系。对比泡沫钛和致密钛的性能指标，发现在工程应用中泡沫钛是致密钛的优秀替代物。
作者 N.JHA D.P.MONDAL M.D.GOEL J.D.MAJUMDAR S.DAS O.P.MODI
机构地区 CSIR-Advanced Materials and Processes Research Institute Department of Metallurgical and Materials Engineering
出处 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2014年第1期89-99,共11页 中国有色金属学报（英文版）
关键词 titanium foam CENOSPHERE relative density plateau stress energy absorption 泡沫钛 空心微球 相对密度 平台应力 能量吸收
分类号 TF125 [冶金工程—粉末冶金]
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参考文献36

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Transactions of Nonferrous Metals Society of China
2014年 第1期

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