Enhanced pitting resistance through designing a high-strength 316L stainless steel with heterostructure

For additive manufacturing materials, different process parameters might cause non-negligible microstructural defects. Due to the deficient or surplus energy input during the process, porosity would result in significantly different mechanical responses. In addition, the heterogeneity of the microstructure of additive manufactured material could increase the anisotropic behavior in both deformation and failure stages. The aim of this study is to perform a numerical investigation of the anisotropic plasticity affected by the microstructural features, in particular, texture and porosity. The coupling of the synthetic microstructure model and the crystal plasticity method is employed to consider the microstructural features and to predict the mechanical response at the macroscopic level, including both flow curve and r-value evolution. The additive manufactured 316L stainless steel is chosen as the reference steel in this study. Porosity decreases the stress of material, however, it reduces the anisotropy of material with both two types of textures. Regardless of porosity, grains with <111>//BD fiber of reference material is preferable for high strength requirement while the random orientations are favorable for homogeneous deformation in applications.

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Impact property of high-strength 316L stainless steel with heterostructures

Materials Science and Engineering A ◽

10.1016/j.msea.2019.03.105 ◽

2019 ◽

Vol 754 ◽

pp. 457-460 ◽

Cited By ~ 7

Author(s):

Jiansheng Li ◽

Qingzhong Mao ◽

Jinfeng Nie ◽

Zhaowen Huang ◽

Shuaizhuo Wang ◽

...

Keyword(s):

Stainless Steel ◽

316L Stainless Steel ◽

High Strength ◽

Impact Property

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High Strength and Ductility of Additively Manufactured 316L Stainless Steel Explained

Metallurgical and Materials Transactions A ◽

10.1007/s11661-018-4607-2 ◽

2018 ◽

Vol 49 (7) ◽

pp. 3011-3027 ◽

Cited By ~ 43

Author(s):

Md. Shamsujjoha ◽

Sean R. Agnew ◽

James M. Fitz-Gerald ◽

William R. Moore ◽

Tabitha A. Newman

Keyword(s):

Stainless Steel ◽

316L Stainless Steel ◽

High Strength ◽

Strength And Ductility

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4718908 High-strength, coldforged type 316l stainless steel for orthopedic implant

Biotechnology Advances ◽

10.1016/0734-9750(88)90309-6 ◽

1988 ◽

Vol 6 (2) ◽

pp. 287

Keyword(s):

Stainless Steel ◽

316L Stainless Steel ◽

High Strength ◽

Orthopedic Implant ◽

Type 316L ◽

Type 316L Stainless Steel

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A TEM microscopical investigation of the magnetic domain structure of a metastable austenitic stainless steel

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100171213 ◽

1994 ◽

Vol 52 ◽

pp. 696-697

Author(s):

G. Fourlaris ◽

T. Gladman

Keyword(s):

Tensile Strength ◽

Stainless Steel ◽

Austenitic Stainless Steel ◽

Cold Rolling ◽

Solution Treatment ◽

Magnetic Domain ◽

High Strength ◽

Medium Carbon Steel ◽

Magnetic Characteristics ◽

Metastable Austenitic Stainless Steel

Stainless steels have widespread applications due to their good corrosion resistance, but for certain types of large naval constructions, other requirements are imposed such as high strength and toughness , and modified magnetic characteristics.The magnetic characteristics of a 302 type metastable austenitic stainless steel has been assessed after various cold rolling treatments designed to increase strength by strain inducement of martensite. A grade 817M40 low alloy medium carbon steel was used as a reference material.The metastable austenitic stainless steel after solution treatment possesses a fully austenitic microstructure. However its tensile strength , in the solution treated condition , is low.Cold rolling results in the strain induced transformation to α’- martensite in austenitic matrix and enhances the tensile strength. However , α’-martensite is ferromagnetic , and its introduction to an otherwise fully paramagnetic matrix alters the magnetic response of the material. An example of the mixed martensitic-retained austenitic microstructure obtained after the cold rolling experiment is provided in the SEM micrograph of Figure 1.

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