Microscale prediction of deformation in an austenitic stainless steel under uniaxial loading

Li, Dongfeng; O’Dowd, Noel P.; Davies, Catrin M.; Zhang, Shuyan

doi:10.1016/j.euromechsol.2011.02.002

Cited by 24 publications

(20 citation statements)

References 35 publications

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“…Another aspect is the instrument friction with the sheet material that impede the equal plastic deformation. Most of the authors are trying to explain this improper depletion in thickness and technological difficulties during plastic deformation with different surveys introduced by one direction cut (usually identical with the rolling direction (RD)) samples [3][4][5][6]. This approach does not fully explain the differences in the strain values in the other directions relative to the RD.…”

Section: Introductionmentioning

confidence: 99%

Changes in the mechanical properties and microstructure of anisotropic austenitic stainless sheet steel after uniaxial tensile test

Yankov

Nikolova

2017

MATEC Web Conf.

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Abstract. The aim of the investigation is to study the changes in the characteristics of an austenitic sheet material X5CrNi18-10 (1.4301, AISI 304) after a plastic deformation. Samples are cut out from the sheet material at three different directions -0°, 45° and 90° angle to the rolling direction. The changes in the mechanical properties and microstructure of the anisotropic austenitic steel are investigated by mechanical tests (uniaxial tension tests and hardness measurements) and structural analyses (optical and scanning electron microscopy, X-ray diffraction). It is established that the strain induced phase transformation of the metastable austenite to martensite during the tension tests changes the magnetic properties of the steel. It is found out that the sheet anisotropy effect on the uniform deformation, the thickness reduction and structure of the austenite sheet material is more essential for the plastic deformation behaviour than the strain-induced Ȗ ĺ Įǯ phase transformation.

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Section: Introductionmentioning

confidence: 99%

Changes in the mechanical properties and microstructure of anisotropic austenitic stainless sheet steel after uniaxial tensile test

Yankov

Nikolova

2017

MATEC Web Conf.

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“…An EBSD scan of 300 µm × 175 µm is obtained from the region, directly adjacent to the notch root, as indicated in the lower diagram in figure 2b. EBSD results are presented as inverse pole maps, based on the three Euler angles [38,39]. Through the use of an EBSD analysis, changes in block orientation due to deformation can be measured accurately, providing experimental validation of constitutive models at the microscale.…”

Section: Materials and Experimental Proceduresmentioning

confidence: 99%

“…It has previously been established [40] that a columnar representation of the material microstructure yields almost identical results to a fully equiaxed (3D) model [38,41] when loaded in-plane. As the EBSD scan provides surface measurements only, significantly greater effort is required to obtain a full 3D representation of the material microstructure, with little apparent improvement in model accuracy [38][39][40][41]. Twelve material parameters are used in the crystal plasticity model.…”

Section: Microscale Analysismentioning

confidence: 99%

“…As in previous work a finite-element (FE) approach is used, with an explicit representation of the material microstructure, focusing at the block level. In [36][37][38][39][40], uniaxial loading of P91 was considered, with validation through neutron diffraction measurements in [40]. In this work, we consider a complex multiaxial loading condition (notched three point bend) with validation carried out both at the macroscale, through overall specimen deformation and notch opening, and at the microscale thourgh EBSD measurements.…”

Section: Introductionmentioning

confidence: 99%

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Microscale deformation of a tempered martensite ferritic steel: Modelling and experimental study of grain and sub-grain interactions

Golden

Guo

et al. 2016

Journal of the Mechanics and Physics of Solids

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In this paper, a finite-element modelling framework is presented with explicit representation of polycrystalline microstructure for a tempered martensite ferritic steel. A miniature notched specimen was manufactured from P91 steel with a 20,000 hour service history and tested at room temperature under three point bending. Deformation at the microscale is quantified by electron back scattered diffraction (EBSD) before and after mechanical loading. A representative volume element was developed, based on the initial EBSD scan, and a crystal plasticity model used to account for slip-based inelastic deformation in the material. The model showed excellent correlation with the experimental data when the relevant comparisons were made.

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“…Using this technique absorption correction can be neglected and the possible variation of texture through the thickness of the sample can be integrated [4]. The comparison between the neutron diffraction measurements and the model predictions suggests that in most cases the finite model can predict the lattice strain evolution at the microscale and capture the general trends observed in the experiments [7]. The results associated with latent hardening effects at the microscale also indicate that in situ neutron diffraction measurements in conjunction with macroscopic uniaxial tensile data may be used to calibrate crystal plasticity models for the prediction of the inelastic material deformation response [8], for determining the retained austenite content of transformation induced plasticity (TRIP).…”

Section: Introductionmentioning

confidence: 99%

Texture Analysis using The Neutron Diffraction Method on The Non Standardized Austenitic Steel Process by Machining,Annealing, and Rolling

Priyanto¹,

Parikin²,

Li³

2016

MST

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Austenitic steel is one type of stainless steel which is widely used in the industry. Many studies on austenitic stainless steel have been performed to determine the physical properties using various types of equipment and methods. In this study, the neutron diffraction method is used to characterize the materials which have been made from minerals extracted from the mines in Indonesia. The materials consist of a granular ferro-scrap, nickel, ferro-chrome, ferro-manganese, and ferro-silicon added with a little titanium. Characterization of the materials was carried out in three processes, namely: machining, annealing, and rolling. Experimental results obtained from the machining process generally produces a texture in the 〈100〉 direction. From the machining to annealing process, the texture index decreases from 3.0164 to 2.434. Texture strength in the machining process (BA2N sample) is 8.13 mrd and it then decreases to 6.99 in the annealing process (A2DO sample). In the annealing process the three-component texture appears, cube-on-edge type texture {110}〈001〉, cube-type texture {001}〈100〉, and brass-type {110}〈112〉. The texture is very strong leading to the direction of orientation {100}〈001〉, while the {011}〈100〉 is weaker than that of the {001}, and texture with orientation {110}〈112〉 is weak. In the annealing process stress release occurred, and this was shown by more randomly pole compared to stress release by the machining process. In the rolling process a brass-type texture{110}〈112〉 with a spread towards the goss-type texture {110}〈001〉 appeared, and the brass component is markedly reinforced compared to the undeformed state (before rolling). Moreover, the presence of an additional {110} component was observed at the center of the (110) pole figure. The pole density of three components increases with the increasing degree of thickness reduction. By increasing degrees of rolling from 81% to 87%, the value of orientation distribution function increases by a factor about three times. Abstrak Analisis Tekstur Menggunakan Metode Difraksi Neutron pada Baja Austenite Non Standar yang Diproses denganPermesinan, Penganilan, dan Pengerolan. Baja austenitik merupakan salah satu jenis baja tahan karat yang banyak digunakan dalam industri. Banyak studi telah dilakukan pada baja tahan karat austenitik dengan menggunakan berbagai jenis peralatan dan metode untuk menentukan sifat fisika. Dalam penelitian ini telah dibuat dari mineral yang diekstraksi dari tambang di Indonesia dan dikarakterisasi dengan metode difraksi neutron. Bahan terdiri dari butiran ferro-scrap, nikel, ferro-krom, ferro-mangan, dan ferro-silikon dan ditambahkan sedikit titanium. Karakterisasi bahan dilakukan dalam tiga proses, yaitu: proses permesinan, proses anil, dan proses pengerolan. Hasil eksperimen yang diperoleh dari proses pemesinan secara umum menghasilkan tekstur dalam arah 〈100〉. Dari proses permesinan ke proses anil indeks tekstur turun dari 3,0164 ke 2,434. Kekuatan tekstur dalam proses pemesinan (sampel BA2N) adalah 8,13 mrd ke...

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Microscale prediction of deformation in an austenitic stainless steel under uniaxial loading

Cited by 24 publications

References 35 publications

Changes in the mechanical properties and microstructure of anisotropic austenitic stainless sheet steel after uniaxial tensile test

Changes in the mechanical properties and microstructure of anisotropic austenitic stainless sheet steel after uniaxial tensile test

Microscale deformation of a tempered martensite ferritic steel: Modelling and experimental study of grain and sub-grain interactions

Texture Analysis using The Neutron Diffraction Method on The Non Standardized Austenitic Steel Process by Machining,Annealing, and Rolling

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