On the low-cycle fatigue response of pre-strained austenitic Fe61Mn24Ni6.5Cr8.5 alloy showing TWIP effect

Lambers, H.-G.; Rüsing, Christian; Niendorf, Т.; Geißler, David; Freudenberger, J.; Maier, Hans Jürgen

doi:10.1016/j.ijfatigue.2012.01.002

Cited by 63 publications

(24 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus, pre-treatments like cold working markedly influence the fatigue behavior and mechanisms of such steels as well [8,9,29]. For the solution-annealed state -as in this paper -it is generally agreed that a certain strain amplitude as well as a threshold value of the cumulated plastic strain have to be exceeded to trigger the fatigue induced martensitic phase transformation.…”

Section: Discussionmentioning

confidence: 80%

The influence of the nitrogen/nickel‐ratio on the cyclic behavior of austenitic high strength steels with twinning‐induced plasticity and transformation‐induced plasticity effects

Güler

Schymura

Fischer

et al. 2018

Materialwissenschaft Werkst

View full text Add to dashboard Cite

Austenitic high nitrogen (AHNS) and austenitic high interstitial steels (AHIS) are of interest for mechanical engineering applications because of their unique combination of mechanical (strength, ductility), chemical (corrosion resistance) and physical (non-ferromagnetic) properties. But despite their high strength values e. g. after cold deformation up to 2 GPa in combination with an elongation to fracture of 30 %, which is based on twinning-induced plasticity (TWIP) mechanisms and transformation-induced plasticity (TRIP) mechanisms, the fatigue limit remains relatively small. While for chromium-nickel steels the fatigue limit rises with about 0.5-times the elastic limit it does not at all for austenitic high-nitrogen steels or only to a much smaller extent for nickel-free austenitic high-interstitial steels. The reasons are still not fully understood but this behavior can roughly be related to the tendency for planar or wavy slip. Now the latter is hindered by nitrogen and promoted by nickel. This contribution shows the fatigue behavior of chromium-manganese-carbon-nitrogen (CrMnCn) steels with carbon + nitrogen-contents up to 1.07 wt.%. Beside the governing influence of these interstitials on fatigue this study displays, how the nitrogen/nickel-ratio might be another important parameter for the fatigue behavior of such steels.Keywords: Austenitic high strength steels / Ramberg-Osgood / twinning-induced plasticity (TWIP) / transformation-induced plasticity (TRIP) / nitrogen-nickel ratio / cyclic behavior Schlü sselwö rter: Austenitische hochfeste Stä hle / Ramberg-Osgood / durch Zwillingsbildung induzierte Plastizitä t (TWIP) / umwandlungsbewirkte Plastizitä t (TRIP) / Stickstoff-Nickel Verhä ltnis / zyklische Belastung Corresponding author: S. Gü ler, Institut fü r die Technologien der Metalle, Lehrstuhl Werkstofftechnik, Universitä t Duisburg-Essen,

show abstract

Section: Discussionmentioning

confidence: 80%

The influence of the nitrogen/nickel‐ratio on the cyclic behavior of austenitic high strength steels with twinning‐induced plasticity and transformation‐induced plasticity effects

Güler

Schymura

Fischer

et al. 2018

Materialwissenschaft Werkst

View full text Add to dashboard Cite

show abstract

“…[11] Nevertheless, for the case of axial fatigue in this study, deformation twinning was not triggered, as reflected by Figures 3(a) and (b), which is also the case for the axial fatigue at low strain amplitude, as indicated by the previous studies. [13,14] Therefore, the poor high-cycle fatigue properties of the Fe-30Mn-0.9C TWIP steel in the current study can be owing to two factors, i.e., the relatively low yield strength and the absence of deformation twins during the axial fatigue process.…”

mentioning

confidence: 86%

“…[2][3][4][5][6][7][8][9][10] Generally, most automobile parts are under cyclic loading condition during their service, thus, the fatigue resistance is one of the key factors for the practical utilization of TWIP steels. There are many reports about the low-cycle fatigue properties of TWIP steels, [11][12][13][14][15][16] and the pre-strain method was developed to improve their low-cycle fatigue properties. [11,16] As for the high-cycle fatigue, there have been some investigations about the bending fatigue properties of TWIP steels.…”

mentioning

confidence: 99%

Improving the High-Cycle Fatigue Lives of Fe-30Mn-0.9C Twinning-Induced Plasticity Steel Through Pre-straining

Wang

Zhang

Shao

et al. 2015

Metall Mater Trans A

View full text Add to dashboard Cite

The tensile properties, high-cycle fatigue properties, and microstructure evolutions during fatigue process of asreceived and pre-strained Fe-30Mn-0.9C twinning-induced plasticity (TWIP) steel were investigated. It is found that the fatigue lives of the TWIP steel can be effectively improved through pre-straining, since the deformation twins induced by pre-straining could effectively lead to the improved yield strength and the homogenized deformation. This study may provide possible ways for improving the high-cycle fatigue properties of TWIP steels.In recent years, the advanced high-strength steels have been widely used in automobile industry to satisfy the weight reducing, energy saving, and security principles of new generation cars. [1] Twinning-induced plasticity (TWIP) steels have an excellent combination of high strength and good ductility, so that they are very attractive for automotive industry; therefore, much attention has been paid on the development of TWIP steels. So far, researchers mainly focus on the alloy designing, basic mechanical properties, and the corresponding microstructure evolution during deformation of TWIP steels. [2][3][4][5][6][7][8][9][10] Generally, most automobile parts are under cyclic loading condition during their service, thus, the fatigue resistance is one of the key factors for the practical utilization of TWIP steels. There are many reports about the low-cycle fatigue properties of TWIP steels, [11][12][13][14][15][16] and the pre-strain method was developed to improve their low-cycle fatigue properties. [11,16] As for the high-cycle fatigue, there have been some investigations about the bending fatigue properties of TWIP steels. [17][18][19][20] Hamada et al. [17][18][19] and Karjalainen et al. [20] showed that TWIP steels have quite high bending fatigue strength. However, there are no research findings on the high-cycle fatigue properties of the TWIP steels under axial loading, and the effects of pre-strain on the high-cycle fatigue properties are still not clear so far.In order to improve the fundamental understanding on the axial high-cycle fatigue behaviors of TWIP steels and supplement experimental data, the axial high-cycle fatigue tests of as-received and pre-strained Fe-30Mn-0.9C TWIP steel were performed and the corresponding microstructure evolutions were observed in the current study. The main goal of the current study is to explore further improvement of the high-cycle fatigue properties of TWIP steel via pre-straining.In this study, Fe-30Mn-0.9C (wt pct) TWIP steel was used. The cast ingot was austenized at 1473 K (1200°C) for 4 h, then immediately hot forged into plate with final dimension of 40 9 100 mm 2 at 1223 K to 1473 K (950°C to 1200°C), and finally cooled in air. The plate was annealed at 1323 K (1050°C) for 1 hour and water-quenched, and then dog-bone shaped tensile and fatigue specimens were cut into sectional dimensions of 15 9 3 9 3 and 10 9 5 9 4 mm 3 from the annealed plate, respectively; and the length direction of tensile and fatigue specimen...

show abstract

“…It was reported that TWIP steels exhibit a fatigue limit (FL) close to the yield stress (YS) [7,8,11,12], which is not superior compared to other steel grades [13,14]. Both prestraining [8,15,16] or grain refinement [12,14] have been proved to be effective strategies to increase the fatigue strength. During cyclic loading, TWIP steels may display cyclic hardening and/or cyclic softening depending on the initial microstructure and applied stress/strain amplitude [8][9][10]16].…”

Section: Introductionmentioning

confidence: 99%

“…Both prestraining [8,15,16] or grain refinement [12,14] have been proved to be effective strategies to increase the fatigue strength. During cyclic loading, TWIP steels may display cyclic hardening and/or cyclic softening depending on the initial microstructure and applied stress/strain amplitude [8][9][10]16]. Such behavior has also been reported in the austenitic stainless steels, with the cyclic hardening and softening explained as the dislocation multiplication and rearrangement, respectively [17].…”

Section: Introductionmentioning

confidence: 99%

Evolution of dislocations and twins in high cycle fatigue of a twinning-induced plasticity steel

Wang

Liang

Liu

et al. 2015

Materials Science and Engineering: A

View full text Add to dashboard Cite

On the low-cycle fatigue response of pre-strained austenitic Fe61Mn24Ni6.5Cr8.5 alloy showing TWIP effect

Cited by 63 publications

References 35 publications

The influence of the nitrogen/nickel‐ratio on the cyclic behavior of austenitic high strength steels with twinning‐induced plasticity and transformation‐induced plasticity effects

The influence of the nitrogen/nickel‐ratio on the cyclic behavior of austenitic high strength steels with twinning‐induced plasticity and transformation‐induced plasticity effects

Improving the High-Cycle Fatigue Lives of Fe-30Mn-0.9C Twinning-Induced Plasticity Steel Through Pre-straining

Evolution of dislocations and twins in high cycle fatigue of a twinning-induced plasticity steel

Contact Info

Product

Resources

About