Effect of the Reduction during Cold Rolling on the Phase Composition, Texture, and Residual Stresses in 20Kh15AN3MD2 Steel

IF 0.4 Q4 METALLURGY & METALLURGICAL ENGINEERING
E. I. Lukin, A. A. Ashmarin, I. O. Bannykh, S. Ya. Betsofen, E. V. Blinov, G. S. Seval’nev, D. V. Chernenok, A. N. Bykadorov
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Abstract

X-ray diffraction is used to determine the influence of the reduction during cold rolling of wedge steel 20Kh15AN3MD2 samples on the quantitative phase composition, the texture, and the residual macrostresses in the α and γ phases. When the reduction increases, the fraction of the γ phase decreases from 82% in the initial hot-rolled state to 74% at a 10% reduction and to 60% when the reduction increases to 70%. The type of austenite texture is characterized by the components typical of the rolling texture of fcc metals, namely, the “brass” texture ({110}〈112〉). It does not change at a 10% reduction, then increases significantly at a 20% reduction, and remains the same up to a 70% reduction. The texture of the α phase is characterized by three components, namely, {110}〈110〉, {211}〈110〉, and {001}〈110〉. The first two components are the transformation textures, which dominate in the initial state; after a reduction of 30%, the third component, which corresponds to the rolling texture of the bcc α phase, increases. The estimation of residual stresses shows that compressive stresses of 600–1100 MPa form in the γ phase and tensile stresses of 1200–1600 MPa form in the α phase.

Abstract Image

冷轧过程中的还原对 20Kh15AN3MD2 钢的相组成、组织和残余应力的影响
利用 X 射线衍射测定了楔形钢 20Kh15AN3MD2 样品在冷轧过程中的还原性对 α 和 γ 相的定量相组成、质地和残余宏观应力的影响。当还原度增加时,γ 相的比例从初始热轧状态的 82% 降至还原度 10% 时的 74%,当还原度增加至 70% 时降至 60%。奥氏体组织类型的特征是 fcc 金属轧制组织的典型成分,即 "黄铜 "组织({110}〈112〉)。在减少 10% 时纹理没有变化,减少 20% 时纹理显著增加,减少 70% 时纹理保持不变。α相的纹理由三个部分组成,即{110}〈110〉、{211}〈110〉和{001}〈110〉。前两个分量是变形纹理,在初始状态下占主导地位;减少 30% 后,第三个分量增加,相当于 bcc α 相的轧制纹理。对残余应力的估算表明,在γ相中形成了 600-1100 兆帕的压应力,在α相中形成了 1200-1600 兆帕的拉应力。
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来源期刊
Russian Metallurgy (Metally)
Russian Metallurgy (Metally) METALLURGY & METALLURGICAL ENGINEERING-
CiteScore
0.70
自引率
25.00%
发文量
140
期刊介绍: Russian Metallurgy (Metally)  publishes results of original experimental and theoretical research in the form of reviews and regular articles devoted to topical problems of metallurgy, physical metallurgy, and treatment of ferrous, nonferrous, rare, and other metals and alloys, intermetallic compounds, and metallic composite materials. The journal focuses on physicochemical properties of metallurgical materials (ores, slags, matters, and melts of metals and alloys); physicochemical processes (thermodynamics and kinetics of pyrometallurgical, hydrometallurgical, electrochemical, and other processes); theoretical metallurgy; metal forming; thermoplastic and thermochemical treatment; computation and experimental determination of phase diagrams and thermokinetic diagrams; mechanisms and kinetics of phase transitions in metallic materials; relations between the chemical composition, phase and structural states of materials and their physicochemical and service properties; interaction between metallic materials and external media; and effects of radiation on these materials.
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