Analysis of Strain Hardening Stages of AISI 316 LN Stainless Steel Under Cold Rolling Conditions

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F25%3AN0000022" target="_blank" >RIV/26722445:_____/25:N0000022 - isvavai.cz</a>

Result on the web

<a href="https://www.mdpi.com/2075-4701/15/10/1060" target="_blank" >https://www.mdpi.com/2075-4701/15/10/1060</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/met15101060" target="_blank" >10.3390/met15101060</a>

Result language

angličtina

Original language name

Analysis of Strain Hardening Stages of AISI 316 LN Stainless Steel Under Cold Rolling Conditions

Original language description

In the present investigation, stress-strain curves and strain hardening rates on samples rolled at ambient temperature with thickness reductions of 0%, 10%, 30%, and 50% were studied. On the processed samples, static tensile tests at ambient temperature were performed. Transformation of the engineering stress-strain curves to true stress-strain curves and their numerical processing by first derivation (theta = d sigma/d epsilon) was carried out. Dependencies theta = f(epsilon(T)) characterizing the strain hardening rates were derived. From the curves and the true stress-strain and strain hardening rates, the three stages describing different rates of strain hardening were identified. A rapid increase in true stress and a rapid decrease in the strain hardening rate in Stage I were observed. Quasi-linear dependencies with an increase in true stress but with a slow, gradual decline in the strain hardening rate in Stage II were obtained. Slowly increasing true strains, accompanied by a decrease in strain hardening rates and their transition to softening, led to the formation of plastic instability and necking in Stage III. The endpoints of the strain hardening rate depending on the cold rolling deformations lie in the following intervals: theta(Stage I) is an element of <1904;3032> MPa, theta(Stage II) is an element of <906;-873> MPa, theta(Stage III) is an element of <-144;-11,979> MPa. While in Stage I and Stage II, the plastic deformation mechanism is predominantly dislocation slip, in Stage III, the plastic deformation mechanism is twinning accompanied by dislocation slip.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20501 - Materials engineering

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Metals

ISSN

2075-4701

e-ISSN

—

Volume of the periodical

15

Issue of the periodical within the volume

10

Country of publishing house

CH - SWITZERLAND

Number of pages

11

Pages from-to

1-11

UT code for WoS article

001603835700001

EID of the result in the Scopus database

2-s2.0-105020161913