CAJ | 학술논문

在电子万能试验机上对连续屈服材料实施不同速率和不同控制模式的拉伸试验，获得不同试验条件下的拉伸性能和曲线。试验结果表明：对于连续屈服材料，规定塑性延伸强度Rp0.2随应变速率增加而增大，且有加速增大的趋势；但对材料抗拉强度Rm 的影响因材料强化机理不同而不同；对断后伸长率A影响较小。试验速率控制方式对规定塑性延伸强度Rp0.2无明显影响，不同控制方式在合适时间切换对抗拉强度Rm 和断后伸长率A也无明显影响。
재전자만능시험궤상대련속굴복재료실시불동속솔화불동공제모식적랍신시험，획득불동시험조건하적랍신성능화곡선。시험결과표명：대우련속굴복재료，규정소성연신강도Rp0.2수응변속솔증가이증대，차유가속증대적추세；단대재료항랍강도Rm 적영향인재료강화궤리불동이불동；대단후신장솔A영향교소。시험속솔공제방식대규정소성연신강도Rp0.2무명현영향，불동공제방식재합괄시간절환대항랍강도Rm 화단후신장솔A야무명현영향。
Tensile test of continuous yield material under different test rate or different rate control method were carried out by electronic universal testing machine,and then tensile ProPerties and curves were ob﹣tained. The results showed that the Proof strength of Plastic extension Rp0.2 varied with the strain rate in﹣crease,and it trended to accelerated. While the influence of tensile strength Rm was different,which resul﹣ted from different strengthen mechanism. The influence of Percentage elongation after fracture A was insen﹣sitive to the strain rate. The influence of Proof strength of Plastic extension Rp0.2 was not obvious to the test rate control method. When the test rate control method was switched at aPProPriate time,the influence of tensile strength Rm and Percentage elongation after fracture A were not obvious.