CAJ | 학술논문

对10 mm厚度的20G钢板进行了力学性能测试，采用金相显微镜对20G 钢拉伸过程进行了原位观察，并用硬度计测试硬度的变化。实验结果表明，拉伸过程中晶粒的微观尺寸变形与宏观变形具有一致性，硬度随形变增大而呈现增大趋势，并有明显形变强化效果。
대10 mm후도적20G강판진행료역학성능측시，채용금상현미경대20G 강랍신과정진행료원위관찰，병용경도계측시경도적변화。실험결과표명，랍신과정중정립적미관척촌변형여굉관변형구유일치성，경도수형변증대이정현증대추세，병유명현형변강화효과。
20G steel is used as heat-resistant steel for boiler,and possesses good toughness and ductility.The mechanical properties of 20G steel with the thickness of 10 mm have been tested, and it has been observed in situ by using field optical microscope in tensile process and hardness has been tested by hardness tester.The results show that there is a consistent relationship be-tween the deformation of microscopic grains size and the macroscopic deformation,and hardness has an increasing trend with the increase of deformation,which has a significant deformation strengthening effect.