考虑强度差异效应的转化诱导塑性钢的构造建模

IF 3.4 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Mechanics of Materials Pub Date : 2024-11-19 DOI:10.1016/j.mechmat.2024.105207

Jaebong Jung , Hyeonil Park , Seung Wook Lee , Ji Hoon Kim

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引用次数: 0

摘要

转变诱导塑性（TRIP）钢由于其奥氏体相会发生马氏体相变。本研究使用室温下 1 毫米厚的 TRIP 钢，利用基于磁性体积检测的铁素体范围测量了拉伸和压缩模式下的相变行为。观察到了强度差（SD）效应，即拉伸强度低于压缩强度。拉伸变形的速度快于压缩变形的速度。为了在有限元分析中考虑 SD 效应，开发了基于马氏体动力学的构成模型，并将其分解为弹性、塑性、贝恩和转化部分。在拉伸模式下会产生较大的转化应变，所提出的模型很好地捕捉到了非对称 SD 效应。

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Constitutive modeling of transformation-induced plasticity steels considering strength-differential effect

Transformation-induced plasticity (TRIP) steels undergo martensitic phase transformations due to their austenite phase. In this study, using 1-mm-thick TRIP steel at room temperature, the phase transformation behaviors under tensile and compressive modes were measured using a ferrite scope based on the detection of the magnetic volume. A strength differential (SD) effect was observed, where the tensile strength was lower than the compressive strength. The rate of tensile transformation was faster than that of compressive transformation. To account for the SD effect in finite element analysis, a martensitic kinetics-based constitutive model was developed, which was decomposed into elastic, plastic, Bain, and transformational parts. A larger transformational strain was generated in the tensile mode, and the asymmetric SD effect was captured well by the proposed model.

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来源期刊

Mechanics of Materials 工程技术-材料科学：综合

CiteScore

7.60

自引率

5.10%

发文量

243

审稿时长

46 days

期刊介绍： Mechanics of Materials is a forum for original scientific research on the flow, fracture, and general constitutive behavior of geophysical, geotechnical and technological materials, with balanced coverage of advanced technological and natural materials, with balanced coverage of theoretical, experimental, and field investigations. Of special concern are macroscopic predictions based on microscopic models, identification of microscopic structures from limited overall macroscopic data, experimental and field results that lead to fundamental understanding of the behavior of materials, and coordinated experimental and analytical investigations that culminate in theories with predictive quality.