Superior strength and ductility of 316L stainless steel with heterogeneous lamella structure

Li, Jiansheng; Cao, Yang; Gao, Bo; Li, Yusheng; Zhu, Yuntian

doi:10.1007/s10853-018-2322-4

Cited by 186 publications

(55 citation statements)

References 58 publications

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“…Due to the significant strength mismatch between different domains in HSMs, inhomogeneous deformation occurs in the local areas, leading to a strain gradient around the interfaces [11,12]. The strain gradient is accommodated by building up geometrically necessary dislocations (GNDs) [11,13,14]. In addition, the stress partitioning could occur within different domains (e.g., grains with wide distribution of diameter [15]).…”

Section: Introductionmentioning

confidence: 99%

A high-strength heterogeneous structural dual-phase steel

et al. 2019

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The strengthening and ductilization of steels are of great importance to weight reduction of vehicles. In this work, the strength-ductility synergy of dual-phase (DP) steels was obtained by properly tailoring the structural heterogeneity, including the distribution and fraction of constituent phases. It was demonstrated that heterogeneous structural DP steels with high volume fraction of martensite (from 64 to 83%) led to a good combination of strength and ductility. Compared with the cold-rolled sheets, the tensile strength and uniform elongation of heterogeneous DP steel increased by 700 MPa (from 1.06 to 1.76 GPa) and 2.7% (from 1.3 to 4%), respectively. The contributions from back stress and effective stress were analyzed by cyclic loading-unloading experiments. The underlying deformation mechanism was discussed based on the results of mechanical test and microstructure observation.

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Section: Introductionmentioning

confidence: 99%

A high-strength heterogeneous structural dual-phase steel

et al. 2019

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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.…”

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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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“…Hetero-deformation induced hardening (HDI) is one of the most effective strengthening mechanisms in various heterostructured materials [2, 11,18]. The HDI stress of HLS Al-5083 is shown in Fig.…”

Section: Hdi Strengthening Mechanismmentioning

confidence: 99%

“…Heterostructured materials have been reported to have a good solution of strength and ductility [1,2], which is attributed to their ability to produce hetero-deformation induced (HDI) strengthening to enhance strength and HDI hardening to retain ductility [3]. Several diverse types of heterostructured materials have been reported, including bimodal materials [4 -6], gradient materials [7 -10], heterogeneous lamella materials [2,11], harmonic structure [12 -14], dual-phase steel [15 -17], laminate structure [3,18,19], etc, among which heterogeneous lamella structured (HLS) materials are conducive to engineering applications, since they can be produced using industrial facilities at large scale and low cost.…”

Section: Introductionmentioning

confidence: 99%

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Influence of annealing parameters on the mechanical properties of heterogeneous lamella structured 5083 aluminum alloy

Fang

Ruiz

et al. 2019

Lett. Mater.

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It has long been a research goal to obtain both high strength and ductility in structural materials. As the most important structural materials, metals and alloys are either strong or ductile, but seldom maintain both characteristics at the same time. After decades of attempts, extraordinary high strength has been achieved by involving nano-or ultrafine-grained structure. However, the ductility of these materials is relatively low. In the recent years, heterostructured materials have been demonstrated to possess superior combinations of strength and ductility, which are attributed to the hetero-deformation induced (HDI) strengthening and work hardening. The HDI hardening in previous studies is mainly caused by soft / hard domain boundaries. Here we report a heterogeneous lamella structure (HLS) in 5083 aluminum alloy fabricated by rolling and partial annealing. Superior combinations of strength and ductility have been achieved in the HLS Al-5083 through various annealing times and temperatures in this paper. Based on EBSD and TEM analysis, HDI hardening is an important reason for the excellent combination of strength and ductility. And soft / domain boundary hardening, and precipitation hardening are revealed as two important components of HDI hardening in Al-5083. These findings elucidate the HDI hardening mechanism in Al-5083 alloy, which will help us design the heterostructure of Al-5083 for engineering applications.

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Superior strength and ductility of 316L stainless steel with heterogeneous lamella structure

Cited by 186 publications

References 58 publications

A high-strength heterogeneous structural dual-phase steel

A high-strength heterogeneous structural dual-phase steel

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

Influence of annealing parameters on the mechanical properties of heterogeneous lamella structured 5083 aluminum alloy

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