TY - JOUR
T1 - Influence of temperature on mechanical properties, fracture morphology and strain hardening behavior of a 304 stainless steel
AU - Soares, Guilherme Corrêa
AU - Rodrigues, Mariana Carla Mendes
AU - Santos, Leandro De Arruda
N1 - Funding Information:
This work was partially supported by Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES/ PROEX), Pró-Reitoria de Extensão da Universidade Federal de Minas Gerais (PRPq-UFMG), Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) and Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG).
Publisher Copyright:
© 2017 Universidade Federal de Sao Carlos. All rights reserved.
PY - 2017
Y1 - 2017
N2 - The strain hardening behavior of an AISI 304 stainless steel at different temperatures was investigated in this work. Specimens were tensile tested up to rupture at temperatures of 25, 50, 75, 100, 125 and 150 ºC by using a universal testing machine with an attached environmental test chamber. The induction of martensite by strain was assessed by X-ray diffraction and Rietveld refinement. The resultant fracture morphologies were analyzed by scanning electron microscopy. The changes in the mechanical properties as a function of temperature were evaluated through the variations in the stress-strain curve and the strain hardening behavior was described in terms of strain hardening rate, instantaneous strain hardening exponent and Crussard-Jaoul analysis. Six strain hardening stages were detected at lower temperatures, transitioning into three strain hardening stages at higher temperatures. Fracture surface was ductile at all studied temperatures, although differences in terms of dimple and void morphology were observed.
AB - The strain hardening behavior of an AISI 304 stainless steel at different temperatures was investigated in this work. Specimens were tensile tested up to rupture at temperatures of 25, 50, 75, 100, 125 and 150 ºC by using a universal testing machine with an attached environmental test chamber. The induction of martensite by strain was assessed by X-ray diffraction and Rietveld refinement. The resultant fracture morphologies were analyzed by scanning electron microscopy. The changes in the mechanical properties as a function of temperature were evaluated through the variations in the stress-strain curve and the strain hardening behavior was described in terms of strain hardening rate, instantaneous strain hardening exponent and Crussard-Jaoul analysis. Six strain hardening stages were detected at lower temperatures, transitioning into three strain hardening stages at higher temperatures. Fracture surface was ductile at all studied temperatures, although differences in terms of dimple and void morphology were observed.
KW - AISI 304 steel
KW - Strain hardening behavior
KW - Instantaneous strain hardening exponent
KW - Crussard-Jaoul analysis
KW - Fracture morphology
UR - http://www.scopus.com/inward/record.url?scp=85041755571&partnerID=8YFLogxK
U2 - 10.1590/1980-5373-mr-2016-0932
DO - 10.1590/1980-5373-mr-2016-0932
M3 - Article
AN - SCOPUS:85041755571
SN - 1516-1439
VL - 20
SP - 141
EP - 151
JO - Materials Research
JF - Materials Research
IS - Suppl. 2
ER -