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SUS630是电子传感器弹性体常用材料,对SUS630钢进行不同条件热处理,通过透射电镜观察微观结构变化,并测试其力学、滞后和内耗性能,分析了滞后现象的形成机制。结果表明,SUS630钢经过1 050℃×100 min固溶+-70℃×250 min深冷+500℃×250 min人工时效处理后相对滞后误差较小,SUS630钢滞后随应力和施加载荷的增加而增加,随应变增加其内耗升高而模量降低。在弹性范围内加载,SUS630钢出现滞后现象的原因是材料内部位错滑移引起的微区变形。
SUS630 is a common material for electronic sensor elastomers. The heat treatment of SUS630 steel is carried out under different conditions. The microstructure of SUS630 steel is observed by transmission electron microscopy. The mechanical, hysteresis and internal friction properties of SUS630 steel are analyzed. The formation mechanism of hysteresis is also analyzed. The results show that the relative hysteresis error of SUS630 steel after aging treatment at 1 050 ℃ for 100 min + artificial aging treatment at -70 ℃ × 250 min + 500 ℃ × 250 min is small. The hysteresis of SUS630 steel increases with the increase of stress and applied load Increase, with the strain increases its internal friction increases and the modulus decreases. The reason for the hysteresis of SUS630 steel loaded in the elastic range is the deformation of the micro-zone caused by the dislocation of the material inside.