CAJ | 학술논문

结合拉伸力学性能测试，采用光学显微镜(OM)、扫描电镜(SEM)、透射电镜(TEM)及能谱分析仪(EDS)，研究淬火水温对ZL210A合金显微组织、拉伸断口形貌及力学性能的影响。结果表明：随淬火水温的升高，析出相不断聚集长大，晶粒内空白区域增大，无沉淀析出带变宽；合金的拉伸断口都存在明显的尺寸不等的韧窝，淬火水温为50℃的试样的拉伸断口韧窝尺寸较大且深，试样塑性较好；合金的抗拉强度、屈服强度、硬度和伸长率都随淬火水温的升高先增加后减少；当淬火水温为50℃时，合金的抗拉强度、屈服强度、硬度和伸长率达最大值分别为477 MPa、363 MPa、149 HV和3%。
결합랍신역학성능측시，채용광학현미경(OM)、소묘전경(SEM)、투사전경(TEM)급능보분석의(EDS)，연구쉬화수온대ZL210A합금현미조직、랍신단구형모급역학성능적영향。결과표명：수쉬화수온적승고，석출상불단취집장대，정립내공백구역증대，무침정석출대변관；합금적랍신단구도존재명현적척촌불등적인와，쉬화수온위50℃적시양적랍신단구인와척촌교대차심，시양소성교호；합금적항랍강도、굴복강도、경도화신장솔도수쉬화수온적승고선증가후감소；당쉬화수온위50℃시，합금적항랍강도、굴복강도、경도화신장솔체최대치분별위477 MPa、363 MPa、149 HV화3%。
The effect of quenching water temperature on the microstructure,fracture morphology and mechanical properties of ZL210A alloy was studied by tensile tests, optical microscopy, scanning electron microscopy, transmission electron microscopy and energy spectrum analysis.The results show that, with increasing the quenching water temperature, the precipitate phase tends to grow up, and many blank areas in the grain expand, the precipitation free zones become wider. All the tensile fractures have some dimples with different sizes, when the quenching temperature is 50℃, the dimple size is large and deep. The samples have a good plasticity. The tensile strength, yield strength, hardness and elongation of samples increase first and then decrease as the quenching water temperature rises, when the quenching water temperature is 50℃, the peak values of tensile strength, yield strength, hardness and elongation are 477 MPa, 363 MPa, 149 HV and 3%, respectively.