Abstract:

In order to study local area's plastic damage of waste drive axle housing and quantitative evaluate plastic deformation,a drive axle housing's body material—510L steel plate was taken as tensile test specimens.After Stretching these test specimens to different plastic deformations,by means of X-ray diffraction techniques,metal intelligent magnetic memory analysis techniques,and scanning electron microscope,the relationship among material's plastic deformation rate,X-ray signals and magnetic signals was evaluated comprehensively.Scanning electron microscope was used to observe crystal structure variation characteristics of different plastic deformation rates.The study demonstrates that the X-ray diffraction peak width can be used to quantitatively calculate material's plastic deformation rate at the stage of strain-hardening, the normal component of magnetic field Hp(y) is less. 

Key words: X-ray, diffraction peak width, magnetic memory, plastic deformation

摘要：

为研究废旧驱动桥壳局部区域的塑性损伤，定量评估驱动桥壳的塑性变形率，以驱动桥壳本体材料510L钢板制备拉伸试样，分别将试样拉伸到不同的塑性变形率，用X射线衍射技术、金属智能磁记忆分析技术、扫描式电子显微镜综合评价了材料的塑性变形率与X射线信号和磁信号的关系，观测不同塑性变形率下的晶体结构变化特征。结果显示：在强化阶段，X射线衍射峰宽可定量计算材料的塑性变形率，磁场法向分量Hp(y)较小。 

关键词: X射线, 衍射峰宽, 磁记忆, 塑性变形