Quasi-Static Compression Deformation Mode, Mechanical Property and Energy Absorption Performance of Steel Foam Filled Tubes

被引：0

作者：

Zhang G. ^{[1
]}

Guo C. ^{[1
]}

Yan Z. ^{[1
]}

Zhou Y. ^{[1
]}

Zuo X. ^{[1
]}

机构：

[1] Faculty of Materials Science and Engineering, Kunming University of Science Technology, Kunming

来源：

Cailiao Daobao/Materials Reports | 2021年 / 35卷 / 24期

基金：

中国国家自然科学基金;

关键词：

Energy absorption; Filled tube; Platform stress value; Static compression; Steel foam; Thin-walled tube;

D O I：

10.11896/cldb.20080301

中图分类号：

学科分类号：

摘要：

430L stainless steel powder is used as the raw materials to prepare steel foams by powder metallurgy, and then the steel foam core is combined with the thin-walled metal tubes by physical bonding. The quasi-static axial compression experiments were performed on the empty tubes and the metal foam-filled tubes respectively. The compression deformation mode, mechanical properties and energy absorption perfor-mance of the empty and filled tubes were compared and analyzed. The results show that during the compression deformation process, both the empty aluminum tubes and the steel foam-filled aluminum tubes present axisymmetric deformation mode, and while the empty steel tubes present non-axisymmetric deformation mode, the steel foam-filled steel tubes present mixed deformation mode. The compressive strength of steel foam-filled aluminum tubes is about 56.09 MPa, which is 1.69 times higher than aluminum foam-filled aluminum tubes; the compressive strength of steel foam-filled steel tubes is as high as 116.03 MPa, which is 1.05 times higher than aluminum foam-filled steel tubes. When the strain is 40%, the energy absorption value per unit volume of the steel foam-filled aluminum tubes is 27.93 MJ/m3, which is 2.91 times that of the aluminum foam-filled aluminum tubes, and the energy absorption value per unit volume of the steel foam-filled steel tubes is 35.98 MJ/m3, which is 1.15 times that of aluminum foam-filled steel tubes. When the wall thickness of the steel foam-filled aluminum tubes increases from 1 mm to 2 mm, the platform stress value of the steel foam-filled tubes increases by about 1.36 times. When the strain is 40%, the energy absorption per unit volume increases by about 1.26 times, and the number of deformation folds of the steel foam-filled tubes during the compression process decreases with the increase of the wall thickness. © 2021, Materials Review Magazine. All right reserved.

引用

页码：24158 / 24163

页数：5

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