16Mn/Zn抗震复合材料的单向拉伸与循环变形行为

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 behavior of 16Mn/Zn laminated aseismic composites

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.