Experimental study, on strain rate sensitivity of ductile porous irons
Experimental study, on strain rate sensitivity of ductile porous irons
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球墨铸铁应变率敏感性的实验研究
DOI：
10.1016/j.ijimpeng.2011.06.001
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发表时间：
2012-10
影响因子：
5.1
通讯作者：
Li, Y. L.
中科院分区：
文献类型：
--
作者：
Xue, P.;Iqbal, Naveed;Liao, H. J.;Wang, B.;Li, Y. L.
本文对多孔铁在压缩载荷下，特别是在高应变率压缩载荷下的行为进行了实验研究，以了解应变率和孔隙率对这类多孔金属的屈服强度、能量吸收和承载能力的影响。采用粉末冶金技术制备了孔隙率为10%~ 35%的多孔铁样品。试验在10− 3到103/s的应变率范围内进行，使用伺服液压机和分离式霍普金森压杆（SHPB）系统。结果表明，该材料在不同应变率下呈现双线性行为。孔隙率直接影响材料的屈服强度和屈服后行为，而多孔铁的屈服强度、承载能力和能量吸收能力则随应变率而变化。研究结果被用来开发一个多孔铁的唯象本构模型。
Experimental investigation on the behavior of porous irons under compression loading, especially at high strain rate compression loading, is carried out in this study to help understanding the effects of strain rate and porosity on the yield strength, energy absorption and load carrying capacity of this group of porous metals. Samples of porous iron with porosity ranging from 10% to 35% were fabricated by the powder metallurgy technology. The tests were conducted at a wide range of strain rates from 10−3to 103/s using a servo-hydraulic machine and a split Hopkinson pressure bar (SHPB) system. It has been found from the results that the material shows a bi-linear behavior over the tested strain rates. The porosity has a direct effect on the yield strength and post yield behavior of the material, while the yield strength, load carrying capacity and energy absorption capability of porous irons vary with the strain rate. Findings are being used to develop a phenomenological constitutive model for porous irons.
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影响因子：
6.3
作者：
Bin Wang;J. Klepaczko;G. Lu;L. Kong
通讯作者：
Bin Wang;J. Klepaczko;G. Lu;L. Kong
影响因子：
7.3
作者：
Er-dong Zhang;Bin Wang
通讯作者：
Er-dong Zhang;Bin Wang
DOI：
10.1016/s0921-5093(00)00761-9
发表时间：
2000-08
影响因子：
6.4
作者：
C. Park;S. Nutt
通讯作者：
C. Park;S. Nutt
影响因子：
5.1
作者：
G. Lu;Bin Wang-;Tieguang Zhang
通讯作者：
G. Lu;Bin Wang-;Tieguang Zhang
影响因子：
5.1
作者：
Bin Wang-;Jianjun Zhang;G. Lu
通讯作者：
Bin Wang-;Jianjun Zhang;G. Lu