16Mn/Zn抗震复合材料的单向拉伸与循环变形行为
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摘要
采用复合铸造工艺将16Mn钢和工业纯锌制备出双金属层状抗震复合材料,并对其在不同条件下的单向拉伸性能和循环变形行为进行了研究.研究表明:在单向拉伸条件下,应变速率对复合材料试样的应力-应变曲线影响不大;在0.5%、1%、1.5%应变下所对应的拉压应力随循环次数的增多而增大,材料出现循环硬化行为,并且循环应变的提高使材料的循环硬化行为逐渐明显,进一步循环使拉压应力趋于稳定;16Mn钢/锌抗震复合材料试件具有滞回特性,使结构适应反复载荷作用下的内力和变形,起到减震的作用.
Uniaxial tension and cyclic deformation tests of Steel/Zinc laminated composites made by casting were investigated under different conditions.The results indicated that the strain rate has nearly no influence on the stress-strain curve for the specimens of composites under tension.The stress levels at 0.5%、1%、1.5% strain under tension and compression increase with increasing number of cycles suggesting a cyclic hardening behavior of the material has taken place,which is gradually obvious with increasing cyclic strain.The stress under tension and compression tended to stabilize with further cycling.The sample of 16Mn/Zn laminated aseismic composites has hysteresis characteristic,which make the structure conform to the inner force and deformation under repeated load and decrease the vibration.
引文
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