1Cr18Ni9Ti钢中温拉伸性能研究  

Tensile properties of 1Cr18Ni9Ti steel at moderate temperature

作　　者：王淑花[1] 徐家文[1] 安秀娟 

机构地区：[1]黑龙江科技学院材料科学与工程学院,黑龙江哈尔滨150027 [2]哈尔滨建成集团军品研究所,黑龙江哈尔滨150000

出　　处：《兵器材料科学与工程》2010年第4期59-61,共3页Ordnance Material Science and Engineering

摘　　要：研究在室温以上温度对1Cr18Ni9Ti钢拉伸性能的影响,并利用SEM对拉伸断口形貌进行观察,利用金相显微镜对断口附近的组织进行观察,分析温度对其拉伸性能的影响规律。结果表明:随着试验温度的升高,1Cr18Ni9Ti钢的强度和延伸率均呈现降低的趋势;金相组织分析表明,在所有状态下的拉伸试样断口附近的组织中均有变形孪晶产生,并且随着试验温度的升高,变形孪晶数量降低,但尺寸增大,从而引起强度和塑性的降低。The effects of testing temperature on tensile properties of 1Cr18Ni9Ti steel above room temperature were studied.The fractures surfaces and microstructure near fracture of the tensile samples were observed by SEM and the optical microscope.The results show that with the increase of testing temperatures,the elongation and tensile ultimate strength of 1Cr18Ni9Ti steel decrease.The microstructrure analysis shows that the distortion twins are observed in microstructrure near fracture.With the increase of the testing temperature,the quantity of distortion twins reduces,but the size increases,which results in the decrease of the strength and ductility.

关 键 词：1CR18NI9TI钢 拉伸 温度 

分 类 号：TG115.52[金属学及工艺—物理冶金]