A study of local deformation and damage of dual phase steel

Sirinakorn, Thipwipa; Wongwises, Somchai; Uthaisangsuk, Vitoon

doi:10.1016/j.matdes.2014.08.009

Cited by 71 publications

(39 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Sirinakorn et al [12] in 2014 investigated the localized deformation in DP steels. The inhomogeneous deformation and work hardening behavior of DP steels were studied by Rieger et al.…”

Section: Introductionmentioning

confidence: 99%

Strain-hardening behaviors of dual phase steels with microstructure features

Huang

Gou

Dan

et al. 2016

Materials Science and Engineering: A

View full text Add to dashboard Cite

“…Sirinakorn et al [12] in 2014 investigated the localized deformation in DP steels. The inhomogeneous deformation and work hardening behavior of DP steels were studied by Rieger et al.…”

Section: Introductionmentioning

confidence: 99%

Strain-hardening behaviors of dual phase steels with microstructure features

Huang

Gou

Dan

et al. 2016

Materials Science and Engineering: A

View full text Add to dashboard Cite

“…Recent studies have demonstrated that in future cars DP steels can form up to 80% of the total weight of the car . This is due to the favorable mechanical properties of these steels such as continuous yielding behavior, high initial work hardening rate, low yield to ultimate tensile strength ratio, and good ductility . The mechanical properties of DP steels is controlled by many factors such as grain size, texture, constituent phases properties, and martensite volume fraction .…”

Section: Introductionmentioning

confidence: 99%

“…[3] This is due to the favorable mechanical properties of these steels such as continuous yielding behavior, high initial work hardening rate, low yield to ultimate tensile strength ratio, and good ductility. [4,5] The mechanical properties of DP steels is controlled by many factors such as grain size, texture, constituent phases properties, and martensite volume fraction. [6] Due to their excellent mechanical properties, the application of DP steels has been one of the major ways to reduce the vehicle weight and fuel consumption, while improving vehicle crashworthiness.…”

Section: Introductionmentioning

confidence: 99%

Influence of Heat Treatment Schedule on the Tensile Properties and Wear Behavior of Dual Phase Steels

Ashrafi

Sadeghzade

Emadi

et al. 2016

steel research int.

View full text Add to dashboard Cite

The aim of present study is to investigate the influence of heat treatment schedule on the microstructure, tensile properties, and wear behavior of dual phase (DP) steels. In this regard, a cold‐rolled low carbon steel (0.18% C, 1.25% Mn) is subjected to intercritical annealing (IA), step quenching (SQ), and intermediate quenching (IQ) heat treatment cycles to produce DP steels with different microstructures. The results show that the tensile strength, strength‐elongation balance, and wear resistance of DP steels change in the order of SQ < IA < IQ. Variation of work hardening rate (θ = dσ/dϵ) with stress for the IA treated DP steel shows a one stage behavior corresponding to stage III, where θ linearly decreases with increasing flow stress. In contrast, for IQ and SQ treated specimens, a two stage behavior corresponding to an initial rapid decrease of θ with stress (transition stage) followed by stage III hardening are observed. The dominant wear mechanism for DP steels produced by IA and IQ treatments is a combination of abrasion and oxidation, while for the SQ treated specimen, a combination of oxidation and delamination is observed.

show abstract

“…Cracking within the martensitic phase and at the ferrite/martensite interphase boundary is believed to be the main contributor to the premature fracture in DP steel. 7,8) In the case where the DP steel was heavily deformed, e.g., in the punching process, the presence of a crack facilitated the strain concentration into the ultrafine-grained ferrite, which resulted in the significant ductility loss.…”

Section: Strain Concentration In the Ultrafine-grained Fer-mentioning

confidence: 99%

“…Previous studies regarding the mechanical properties of DP steels argued 7,8) that cracking occurs predominantly in the martensitic phase or at the interface between the ferritic and martensitic phases. Therefore, it is necessary to consider the interaction between the ferritic and martensitic phases in order to investigate the mechanical response of the prestrained sheet of DP steel.…”

Section: Introductionmentioning

confidence: 99%

Quantification of Large Deformation with Punching in Dual Phase Steel and Change of its Microstructure –Part III: Micro-tensile Behavior of Pre-strained Dual-phase Steel

et al. 2016

View full text Add to dashboard Cite

The deformation behavior of inhomogeneous microstructures developed by pre-straining was studied by micro-tensile testing to elucidate the cause of low hole expandability of ferrite-martensite dual-phase (DP) steels. Slip bands developed in the ferritic phase, when the DP steel was cold-rolled (CR) at a reduction of 60% in thickness; in the 88% CR microstructure, ultrafine ferrite grains with a strong texture were locally observed. While the nanohardness increased with increasing pre-strain in the ferritic phase, it was constant in the martensitic phase. Tensile tests using micrometer-sized specimens with ferritic and martensitic phases revealed that the ultrafine-grained ferritic microstructure exhibited high yield strength but low ductility when compared to the slip band ferritic microstructure. While a shear type fracture occurred without necking in the former, the latter exhibited a chisel-edge type failure. In the absence of ultra grain refinement by pre-straining, the inhibition of slip transfer by the interphase boundary was a major contributor to the strengthening in the DP steel. The ductility loss of the severely deformed DP steel was attributed to localized strain in the ultrafine-grained ferritic microstructure.

show abstract

A study of local deformation and damage of dual phase steel

Cited by 71 publications

References 29 publications

Strain-hardening behaviors of dual phase steels with microstructure features

Strain-hardening behaviors of dual phase steels with microstructure features

Influence of Heat Treatment Schedule on the Tensile Properties and Wear Behavior of Dual Phase Steels

Quantification of Large Deformation with Punching in Dual Phase Steel and Change of its Microstructure –Part III: Micro-tensile Behavior of Pre-strained Dual-phase Steel

Contact Info

Product

Resources

About