Deformation mechanisms of 304L stainless steel with heterogeneous lamella structure

Li, Jiansheng; Fang, Chao; Liu, Yanfang; Huang, Zhiwei; Wang, Shuaizhuo; Mao, Qingzhong; Li, Yusheng

doi:10.1016/j.msea.2018.11.047

Cited by 56 publications

(22 citation statements)

References 21 publications

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“…The formation of martensite can be detected and evaluated by X-ray diffraction (XRD) [53,[78][79][80][81], neuron diffraction [82,83], electron backscatter diffraction (EBSD) [18,[84][85][86][87], magnetic methods including the eddy current method [88][89][90][91][92][93][94][95], metallography [78,89,96], and other techniques [96][97][98][99][100]. Some of these methods are briefly discussed in the following.…”

Section: Measuring Martensite Contentmentioning

confidence: 99%

Deformation-induced martensite in austenitic stainless steels: A review

Sohrabi

Naghizadeh

Mirzadeh

2020

Archiv.Civ.Mech.Eng

181

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Recent progress in the understanding of the deformation-induced martensitic transformation, the transformation-induced plasticity (TRIP) effect, and the reversion annealing in the metastable austenitic stainless steels are reviewed in the present work. For this purpose, the introduced methods for the measurement of martensite content are summarized. Moreover, the austenite stability as the key factor for controlling the austenite to martensite transformation is critically discussed. This is realized by analyzing the effects of chemical composition, initial grain size, applied strain, deformation temperature, strain rate, and deformation mode (stress state). For instance, the effect of initial grain size is found to be complicated, especially in the ultrafine grained (UFG) regime. Furthermore, it seems that there is a critical grain size for changing the trend of α′-martensite formation. Decreasing the deformation temperature motivates the formation of α′-martensite, but there is a critical temperature for achieving the maximum tensile ductility. Afterwards, the modeling techniques for the transformation kinetics and the contribution of deformation-induced martensitic transformation to the strengthening of material and also strength-ductility trade-off are critically surveyed. The processing of UFG microstructure during reversion annealing, the effects of the recrystallization of the retained austenite, the martensitic shear and diffusional reversion mechanisms, and the annealing-induced martensitic transformation are also summarized. Accordingly, this overview presents the opportunities that the strain-induced martensitic transformation can offer for controlling the microstructure and mechanical properties of metastable austenitic stainless steels.

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Section: Measuring Martensite Contentmentioning

confidence: 99%

Deformation-induced martensite in austenitic stainless steels: A review

Sohrabi

Naghizadeh

Mirzadeh

2020

Archiv.Civ.Mech.Eng

181

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“…[4][5][6][7][8][9] The occurrence of the martensitic transformation during plastic deformation can enhance the work-hardening capacity of the material, resulting in the inhibition of necking and enhancement of plasticity that is known as transformation-induced plasticity (TRIP) effect. [10] The formation of martensite and deformation structures during straining of austenitic stainless steels have been recently studied in comprehensive works by Li et al, [11,12] Huang et al, [13] Järvenpää et al, [14] and Nasiri et al [15] The extent of martensitic transformation decreases by increasing the deformation temperature and it will not happen above a specific temperature known as M d . [5][6][7][8][9] The temperature dependency of mechanical properties during tensile deformation has been the subject of several studies.…”

mentioning

confidence: 99%

Unraveling the Effect of Deformation Temperature on the Mechanical Behavior and Transformation‐Induced Plasticity of the SUS304L Stainless Steel

Zergani

Mirzadeh

Mahmudi

2020

steel research int.

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The behavior of the SUS304L metastable austenitic stainless steel during deformation above and below Md temperature is systematically studied. At temperatures higher than Md, linear temperature‐dependent relationships are observed for tensile strength and elongation; whereas below Md, a sharp increase in these parameters is identified. A pronounced transformation‐induced plasticity (TRIP) effect is observed when the amount of martensite in the necked region becomes significant, resulting in a maximum point in the work‐hardening plot and enhancement of strength–ductility balance.

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“…Inside the bands, α′-martensite is formed according to γ→ε→α′ mechanism. In other works [3,7,35], the authors observed the formation according to γ→α′-transformation mechanism without intermediate ε-martensite formation. The differences seem to be caused by diverse in the chemical composition and deformation temperature, different original state and deformation procedure.…”

Section: Discussionmentioning

confidence: 92%

“…However, in the case of deformation with relatively low degrees at a constant temperature, when the development of SIMT and twinning is simultaneously possible, the mechanism of deformation in each grain is determined primarily by its orientation relative to the loading axis [6]. During deformation of MASS with different degrees, the process of structure formation can be divided into stages due to the implementation of various deformation mechanisms [3,7,8,9], which has a decisive influence on the mechanical properties of MASS.…”

Section: Introductionmentioning

confidence: 99%

Metastable Austenitic Steel Structure and Mechanical Properties Evolution in the Process of Cold Radial Forging

Панов

Перцев²,

Смирнов

et al. 2019

Materials

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The article presents the influence of structure formation on the properties of 321 metastable austenitic stainless steel in the process of cold radial forging (CRF). The steel under study after austenitization was subjected to CRF at room temperature with degrees of true strain (e) 0.26, 0.56, 1.00, 1.71 and 2.14. It has been shown that structure formation of the studied steel during CRF consists of three stages: formation of the lamellar structure of austenite, formation of the trapezoidal structure, and formation of the equiaxial grain structure. The kinetics of the strain-induced α’-martensitic transformation is related to the stages of structure evolution. Hardness, ultimate tensile strength and yield strength uniformly increase in all stages of structure formation with a significant decrease of elongation to fracture during the first stage of structure formation while the value of elongation to fracture remains constant in the subsequent stages of deformation. Impact strength of fatigue cracked specimens (KCT) decreases sharply at the first stage of structure formation and smoothly increases at the second and third stages. However, the impact strength of V-notch specimens (KCV) continuously decreases when deformation degree increases in the overall investigated deformation range.

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Deformation mechanisms of 304L stainless steel with heterogeneous lamella structure

Cited by 56 publications

References 21 publications

Deformation-induced martensite in austenitic stainless steels: A review

Deformation-induced martensite in austenitic stainless steels: A review

Unraveling the Effect of Deformation Temperature on the Mechanical Behavior and Transformation‐Induced Plasticity of the SUS304L Stainless Steel

Metastable Austenitic Steel Structure and Mechanical Properties Evolution in the Process of Cold Radial Forging

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