结构各向异性对循环载荷下铁磁钢断裂模式的影响

IF 0.7 4区 材料科学 Q4 MATERIALS SCIENCE, CHARACTERIZATION & TESTING Strength of Materials Pub Date : 2024-09-17 DOI:10.1007/s11223-024-00666-0
O. P. Gopkalo, G. Ya. Bezlyudko, Yu. P. Kurash
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引用次数: 0

摘要

通过实验证实了无损检测方法的潜力,从而获得了铁磁钢的循环加载断裂模式与结构各向异性之间的关系。结果表明,弹性静态或循环加载与稳定结构一致,并因外加应力而具有一定的各向异性动力学。塑性变形后,新的稳定结构在残余应力的作用下形成。各向异性因子取决于弹性和弹塑性、静态或循环加载下的有效相对应力水平。各向异性因子随弹性或弹塑性载荷的动力学方向变化,确定了由可逆损伤过程引起的机械载荷的安全范围,以及不可逆转疲劳、高循环和低循环疲劳以及引起相应断裂模式的准静态损伤的累积风险范围。无损矫顽法可设定金属耐久性、屈服极限以及从低周期疲劳到低周期准静态断裂的过渡应力。
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Effect of Structural Anisotropy on a Fracture Mode of Ferromagnetic Steels Under Cyclic Loading

The potentials of nondestructive test methods are experimentally substantiated to get a cyclic loading fracture mode of ferromagnetic steels against their structural anisotropy, determined by coercive force measurements. Elastic static or cyclic loading was revealed to be consistent with a stable structure with certain anisotropy kinetics due to applied stresses. After plastic deformation, a new stable structure is formed induced by residual stresses. The anisotropy factor depended on the level of active relative stresses under elastic and elastoplastic, static, or cyclic loading. The change in kinetics direction for the anisotropy factor with elastic or elastoplastic loading defines the safe range of mechanical loading caused by reversible damage processes, as well as the ranges of accumulation risks for irreversible fatigue, high- and low-cycle fatigue and quasistatic damages giving rise to corresponding fracture modes. The nondestructive coercimetric method permits setting the metal endurance, yield limit, and transition stress from low-cycle fatigue to low-cycle quasistatic fracture.

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来源期刊
Strength of Materials
Strength of Materials MATERIALS SCIENCE, CHARACTERIZATION & TESTING-
CiteScore
1.20
自引率
14.30%
发文量
89
审稿时长
6-12 weeks
期刊介绍: Strength of Materials focuses on the strength of materials and structural components subjected to different types of force and thermal loadings, the limiting strength criteria of structures, and the theory of strength of structures. Consideration is given to actual operating conditions, problems of crack resistance and theories of failure, the theory of oscillations of real mechanical systems, and calculations of the stress-strain state of structural components.
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