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泡沫Al合金的压缩性能及其能量吸收
引用本文:王斌,何德坪,舒光冀.泡沫Al合金的压缩性能及其能量吸收[J].金属学报,2000,36(10):1037-1040.
作者姓名:王斌  何德坪  舒光冀
作者单位:1. 江苏淮海投资有限公司工作,南京,210005
2. 东南大学材料科学与工程系,南京,2l0096
基金项目:国家自然科学基金资助项目19982001
摘    要:研究了泡沫纯铝和泡沫AlSi7Mg0.45在单向压缩条件下的应力-应变(σ-ε)曲线,分析了它们的变形行为,并讨论了其能量吸收和能量吸收效率,结果表明:泡沫纯铝与泡沫Al合金的σ-ε曲线均由弹性变形段、平缓段和紧实段组成;在压缩过程中,泡沫纯铝的骨架变形以弯曲为主,泡沫AlSi7Mg0.45的骨架变形主要由局部断裂产生;在相同孔隙率下,泡沫AlSi7Mg0.45的能量吸收大于泡沫纯铝;能量吸收效率

关 键 词:能量吸收  孔隙率  泡沫铝合金  压缩性能
文章编号:0412-1961(2000)10-1037-04
修稿时间:1999年9月4日

COMPRESSIVE PROPERTY AND ENERGY ABSORPTION OF FOAMED Al ALLOY
WANG Bin,HE Deping,SHU Guangji.COMPRESSIVE PROPERTY AND ENERGY ABSORPTION OF FOAMED Al ALLOY[J].Acta Metallurgica Sinica,2000,36(10):1037-1040.
Authors:WANG Bin  HE Deping  SHU Guangji
Abstract:The compressive stress-strain curves of foamed pure Al and foamed AlSi7Mg0.45 were studied, and the corresponding deformation behaviors, energy absorption capacity and energy absorption efficiency were discussed. The results show that the stress-strain curves of foamed pure Al and foamed Al alloy consist of elasticity, collapse plateau and densification segments; in compressive procession the mainly Way of the framework deformation is its bending for foamed pure Al and is rupturing for foamed AlSi7Mg0.45. Under the condition of the same porosity the energy absorption capacity of foamed AlSi7Mg0.45 is bigger than that of foamed pure Al and the energy absorption efficiency related to strain has a peak value.
Keywords:foamed Al alloy  stress-strain curve  energy absorption capacity  energy absorption efficiency  porosity  
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