Effect of pre-straining on low-temperature mechanical behavior of AISI 304L

Kim, Jeong‐Hyeon; Park, Woong-Sup; Chun, Min-Sung; Kim, Jong-Joo; Bae, Jun-Hong; Kim, Myung‐Hyun; Lee, Jae-Myung

doi:10.1016/j.msea.2012.02.044

Cited by 59 publications

(21 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These increases can normally be due to the formation of face centered cubic (FCC) materials, at the present stage, the deformation-induced martensite [14][15][16][17]. The volume fraction of martensite increases when lowering the test temperature [18], resulting in increases of the YS and the UTS due to composite strengthening by continuous refinement of the martensite and austenite mixture [19][20][21]. The present results support the aforementioned claims.…”

Section: Temperature Dependence Of Engineering Stress-strain Curvessupporting

confidence: 85%

Tensile Deformation Temperature Impact on Microstructure and Mechanical Properties of AISI 316LN Austenitic Stainless Steel

Xiong

et al. 2018

J. of Materi Eng and Perform

View full text Add to dashboard Cite

Uniaxial tensile tests were conducted on AISI 316LN austenitic stainless steel from-40C to 300C at a rate of 0.5 mm/min. Microstructure and mechanical properties of the deformed steel were investigated by optical, scanning and transmission electron microscopies, X-ray diffraction, and microhardness testing. The yield strength, ultimate tensile strength, elongation and microhardness increase with the decrease of the test temperature. The tensile fracture morphology has the dimple rupture feature after low temperature deformations, and turns to a mixture of transgranular fracture and dimple fracture after high temperature ones. The dominating deformation microstructure evolves from dislocation tangle/slip bands to large deformation twins/slip bands with temperature decrease. The deformation-induced martensite transformation can only be realized at low temperature, and its quantity increases with the decrease of the temperature.

show abstract

Section: Temperature Dependence Of Engineering Stress-strain Curvessupporting

confidence: 85%

Tensile Deformation Temperature Impact on Microstructure and Mechanical Properties of AISI 316LN Austenitic Stainless Steel

Xiong

et al. 2018

J. of Materi Eng and Perform

View full text Add to dashboard Cite

show abstract

“…Lüders band formation was generally attributed to the high-density dislocations and explained by Cottrell-Bilby theory [29,30]. It is considered to cause inhomogeneous deformation of local sudden yield of the sheet, resulting in wrinkle bands on the surface of the steel sheet [31]. The length of the Lüders bands at different annealing temperatures is shown in Figure 10a.…”

Section: Effect Of Temperatures On Lüders Bands and Discontinuous Trimentioning

confidence: 92%

Microstructure-Tensile Properties Relationship and Austenite Stability of a Nb-Mo Micro-Alloyed Medium-Mn TRIP Steel

Chun-quan

Qi-chun

Xue

et al. 2018

Metals

View full text Add to dashboard Cite

This study investigated the microstructure-tensile properties relationship and the retained austenite room temperature stability of a Nb and Mo micro-alloyed medium manganese transformation induced plasticity (TRIP) steel. A number of findings were obtained. Most importantly, the steel after being processed by quenching and tempering (Q & T) exhibited excellent tensile properties, i.e., the strength of 878-1373 MPa, the ductility of 18-40% Mo, and Nb microalloying served to control the fraction of retained austenite and to improve tensile strength by fine grain strengthening. Excellent tensile properties were attributable to the large amount of retained austenite which produced a discontinuous TRIP effect. This effect led to the production a large amount of martensite which relieved the stress concentration, contributing to the coordinated deformation between the phases and thus improving the deformability of the steel. Additionally, the differences in Mn and C contents led to varying degrees of austenite stability and the length of the Lüders band decreased as the intercritical annealing temperature increased. The micro-alloyed medium manganese steel experimented on our study showed considerable improvement in tensile properties in comparison with the 5Mn-0.1C medium manganese steel in previous studies.

show abstract

“…It was found that with the increase of tensile prestrain, the yield and tensile strength increased whereas the ductility and low cycle fatigue (LCF) life decreased. [2][3][4][5][6] In addition, a large prestrain in the plastic deformation stage, for example, necking stage, will cause great damage to materials. 7 During the prestrain process, dislocation walls, dislocation cells and so forth were formed, which increased the strength and affected the cyclic responses of the material.…”

Section: Introductionmentioning

confidence: 99%

Comparison of low cycle fatigue behavior of 304 stainless steels induced by tensile and torsional prestrain

Jin

Liu

et al. 2020

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

The effect of tensile and torsional prestrains on fatigue lives of 304 stainless steels is compared. The fatigue life as a function of prestrain amplitudes exhibits an ‘S’ curve, and the inflexion point of the S curve is affected by prestrain modes and cyclic strain amplitudes. An interesting phenomenon is that when the onset stress of secondary hardening reaches 300 MPa, intergranular martensite begins to be formed. Combining martensite distribution, fatigue life and cyclic stress responses, the onset stress of secondary hardening is proposed to reflect the location of martensite nucleation sites. Compared with tensile prestrain, torsional prestrain results in higher stress. In addition, higher prestrain and cyclic amplitudes also lead to higher cyclic stress and hence earlier nucleation of intergranular martensite. Furthermore, the influence mechanism of prestrain modes and cyclic strain amplitudes on the inflexion point of S curve is revealed.

show abstract

Effect of pre-straining on low-temperature mechanical behavior of AISI 304L

Cited by 59 publications

References 17 publications

Tensile Deformation Temperature Impact on Microstructure and Mechanical Properties of AISI 316LN Austenitic Stainless Steel

Tensile Deformation Temperature Impact on Microstructure and Mechanical Properties of AISI 316LN Austenitic Stainless Steel

Microstructure-Tensile Properties Relationship and Austenite Stability of a Nb-Mo Micro-Alloyed Medium-Mn TRIP Steel

Comparison of low cycle fatigue behavior of 304 stainless steels induced by tensile and torsional prestrain

Contact Info

Product

Resources

About