Dislocation Structure and Non-Proportional Hardening of Type 304 Stainless Steel

Sakane, Masao; Itoh, Takamoto; Kida, Shigeyuki; Ohnami, Masateru; Socie, D. F.

doi:10.1016/s1566-1369(99)80012-0

Cited by 8 publications

(8 citation statements)

References 9 publications

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“…Aluminiumknetlegierung 21,32,45,63,107,108,123,134,192,194,197,198,208,210,215,219,222,291,309,328,396,405,414,415,429,431,433,435,[442][443][444]454,463,464,485,490,522 Daneben sind im Sachverzeichnis typische Bezeichnungen, Verfahren und Ansätze aufgenommen, die bei der gewählten Strukturierung des Buches nur unzureichend hervorgehoben werden konnten, darunter die Information zu den Einsatzbereichen der Methoden und zu den anwendungstechnisch wichtigen Werkstoffgruppen.…”

Section: Schlußbemerkungunclassified

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Ermüdungsfestigkeit

2007

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Section: Schlußbemerkungunclassified

“…Die mikrostrukturellen Mechanismen der nichtproportional bedingten Verfestigung werden von Sakane et al[415] sowie Rother[1606] diskutiert. 3.26 und Tabelle 3.4.…”

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Ermüdungsfestigkeit

2007

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“…There is a confirmed relation between the dislocation structure in the non‐proportional loading conditions (Itoh, 6 Sakane 7 ) with an extra hardening of the material. As Socie 10 shows, the hardening curve stress values for phase shift angle equalling 90° are twice as big in relation to those achieved in the non‐proportional loading conditions.…”

Section: Non‐proportional Fatigue Featuresmentioning

confidence: 89%

“…This may be seen in characteristic changes of the dislocation structure. Even on the basis of only Jiao's, 8 Rios's 9 and Sakane's 7 research, it may be shown that in comparison to dislocation structures obtained in proportional loading conditions these are: greater dislocation density, larger wall misorientation and perfection, smaller cell sizes, remaining dislocation within the cells and so, more homogeneous dislocation distribution.…”

Section: Non‐proportional Fatigue Featuresmentioning

confidence: 96%

“…The consequences of loading non‐proportionality are different, in relation to proportional, fatigue damage accumulation mechanisms. According to Sakane, 7 when the biggest shear stress vector comprises all planes α as a result of non‐proportional loading, many slip systems are activated. As a consequence, dislocations moving on the planes initiate additional interactions.…”

Section: Non‐proportional Fatigue Featuresmentioning

confidence: 99%

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Use of a load non‐proportionality measure in fatigue under out‐of‐phase combined bending and torsion

Skibicki

Sempruch

2004

Fatigue Fract Eng Mat Struct

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A B S T R A C T A load non-proportionality measure has been developed for use with an existing critical plane fatigue criterion for the case of fatigue under out-of-phase bending and torsion. Use of this measure shows improved agreement with test data in the literature for this loading condition.Keywords fatigue criteria; multiaxial fatigue; non-proportional loading. N O M E N C L A T U R Eb = reversed bending fatigue strength t = reversed torsion fatigue strength H = loading non-proportionality measure W = weight function α = angle measured from bending stress plane α * = critical plane of maximum range of shear stress σ x(a) = bending stress amplitude τ xy(a) = torsional shear stress amplitude λ = stress amplitude ratio σ x(a) /τ xy(a) τ α = shear stress amplitude on a plane α τ α * = shear stress amplitude on a plane α * σ α * = normal stress corresponding to τ α * τ MD α = equivalent stress on plane α counted according to McDiarmid 1 relation τ MD α * = same as τ MD α but for α * plane, criterion value τ MDP α = same as τ MD α but for non-proportional loadings, according to McDiarmid 3 τ MDNP α = same as τ MD α but for non-proportional loadings, according to McDiarmid 4 τ equ = suggested criterion I N T R O D U C T I O NMost practical solutions take variable sinusoid loading as a basis for assessing the fatigue properties of materials and construction elements. Assuming this model means that values describing cycle geometry, such as amplitude, mean value or cycle asymmetry factor, are sufficient to describe the fatigue behaviour. As a rule, the descriptions do not use parameters connected with time, such as frequency.Stress histories, which do not agree with the sinusoid model, such as random stress histories, are described by creating loading spectra. The methods used for developing loading spectra are based on the distribution of peak values, mean values and amplitudes. In this case the time parameter is also omitted.

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Martensitic transformation of an austenitic stainless steel under non-proportional cyclic loading

Chen

2019

International Journal of Fatigue

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Dislocation Structure and Non-Proportional Hardening of Type 304 Stainless Steel

Cited by 8 publications

References 9 publications

Ermüdungsfestigkeit

Ermüdungsfestigkeit

Use of a load non‐proportionality measure in fatigue under out‐of‐phase combined bending and torsion

Martensitic transformation of an austenitic stainless steel under non-proportional cyclic loading

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