A Simple Model for Stable Cyclic Stress-Strain Relationship of Type 304 Stainless Steel Under Nonproportional Loading

1999 ◽  
Vol 122 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Takamoto Itoh ◽  
Xu Chen ◽  
Toshimitsu Nakagawa ◽  
Masao Sakane
Keyword(s):  
Stainless Steel ◽  
Cyclic Stress ◽  
304 Stainless Steel ◽  
Surface Model ◽  
Stress Strain ◽  
Nonproportional Loading ◽  
Strain Relationship ◽  
Strain Paths ◽  
Type 304 ◽  
Type 304 Stainless Steel

This paper proposes a simple two-surface model for cyclic incremental plasticity based on combined Mroz and Ziegler kinematic hardening rules under nonproportional loading. The model has only seven material constants and a nonproportional factor which describes the degree of additional hardening. Cyclic loading experiments with fourteen strain paths were conducted using Type 304 stainless steel. The simulation has shown that the model was precise enough to calculate the stable cyclic stress-strain relationship under nonproportional loadings. [S0094-4289(00)00101-8]

scholarly journals A Simple Inelastic Constitutive Model for Evaluation of Stable Cyclic Stress Response Under Nonproportional Straining

2002 ◽  
Author(s):  
Masao Sakane ◽  
Takamoto Itoh ◽  
Xu Chen
Keyword(s):  
Kinematic Hardening ◽  
Cyclic Stress ◽  
304 Stainless Steel ◽  
Surface Model ◽  
Cyclic Stress Response ◽  
Strain Relationship ◽  
Strain Paths ◽  
Hardening Rules ◽  
Type 304 ◽  
Type 304 Stainless Steel

This paper proposes a simple two-surface model for cyclic incremental plasticity based on combined Mroz and Ziegler kinematic hardening rules under nonproportional loading. The model has only seven material constants and a nonproportional factor which describes the degree of additional hardening. Cyclic loading experiments with fourteen strain paths were conducted using Type 304 stainless steel. The simulation has shown that the model was precise enough to calculate the stable cyclic stress-strain relationship under nonproportional loadings.

High-Cycle Fatigue Behavior of Solution-Annealed and Thermally-Aged Type 304 Stainless Steel

1980 ◽  
Vol 102 (1) ◽  
pp. 141-146 ◽  
Author(s):  
P. Soo ◽  
J. G. Y. Chow
Keyword(s):  
Stainless Steel ◽  
High Cycle Fatigue ◽  
Fatigue Behavior ◽  
Cyclic Stress ◽  
304 Stainless Steel ◽  
Strain History ◽  
Cycle Fatigue ◽  
Stress Strain ◽  
Type 304 ◽  
Type 304 Stainless Steel

High-cycle, load-controlled fatigue data have been obtained for solution-annealed and thermally-aged Type 304 stainless steel, for temperatures between 22 and 593°C (72-1100°F) at a cycling rate of 40 Hz. Although these data are principally used to assess fatigue failure in components subjected to rapid stress cycling, it has been shown that they may be correlated with available low-cycle data if cyclic stress-strain curves are used for converting the high-cycle stresses to effective strains. Differences in initial stress-strain history and cycling rates for the high- and low-cycle data evaluated are found to be unimportant. For the thermally-aged material there is an initial enhancement of the high-cycle-fatigue strength but, after long aging times, the strength decreases to a value close to that for unaged material. The carbide precipitates formed during aging appear to influence fatigue life through changes they impart in the cyclic work-hardening rates.

Nonproportional Low Cycle Fatigue Criterion for Type 304 Stainless Steel

1995 ◽  
Vol 117 (3) ◽  
pp. 285-292 ◽  
Author(s):  
Takamoto Itoh ◽  
Masao Sakane ◽  
Masateru Ohnami ◽  
Darrell F. Socie
Keyword(s):  
Stainless Steel ◽  
Low Cycle Fatigue ◽  
Cyclic Hardening ◽  
304 Stainless Steel ◽  
Cycle Fatigue ◽  
Nonproportional Loading ◽  
Loading Tests ◽  
Strain Paths ◽  
Type 304 ◽  
Type 304 Stainless Steel

This paper describes a multiaxial low cycle fatigue parameter for correlating Hues under nonproportional loadings. Constant amplitude low cycle fatigue tests were carried out under 14 proportional and complex nonproportional cyclic strain paths using type 304 stainless steel hollow cylinder specimens at room temperature. In nonproportional loading tests, fatigue lives are decreased by as much as a factor of 10 in comparison with those in proportional loading tests with the same strain range. Reduction in fatigue life due to nonproportional loading is closely related to additional nonproportional cyclic hardening. The product of the maximum principal stress and strain ranges correlated the nonproportional fatigue data. A nonproportional cyclic hardening parameter computed from the strain path is also proposed that allows life estimates to be obtained directly from the strain history without the need for a cyclic plasticity model.

Experimental Evaluation of Creep Constitutive Equations for Type 304 Stainless Steel Under Non-Steady Multiaxial States of Stress

1986 ◽  
Vol 108 (2) ◽  
pp. 119-126 ◽  
Author(s):  
S. Murakami ◽  
N. Ohno ◽  
H. Tagami
Keyword(s):  
Stainless Steel ◽  
Creep Behavior ◽  
Stress Change ◽  
304 Stainless Steel ◽  
Test Time ◽  
Surface Model ◽  
Creep Tests ◽  
Type 304 ◽  
Type 304 Stainless Steel ◽  
Multiaxial Loadings

In order to evaluate the validity and limitations of the creep-hardening surface model proposed by the present authors, a series of creep tests for type 304 stainless steel were performed at 600°C under various non-steady multiaxial loadings. The test time and the interval of stress change were 960 hr and 48 or 96 hr, respectively, and five kinds of stress histories consisting of randomly varying stress magnitude, stress direction and interval of stress change were employed. It was found that the creep-hardening surface model describes sufficiently well the creep behavior observed in this work.

scholarly journals Finite Element Modelling of Cold Formed Stainless Steel Columns

10.14311/722 ◽  
2005 ◽  
Vol 45 (3) ◽  
Author(s):  
M. Macdonald ◽  
J. Rhodes
Keyword(s):  
Finite Element ◽  
Stainless Steel ◽  
Load Capacity ◽  
304 Stainless Steel ◽  
Channel Cross Section ◽  
Stress Strain ◽  
Steel Columns ◽  
Strain Behaviour ◽  
Type 304 ◽  
Type 304 Stainless Steel

This paper describes the results obtained from a finite element investigation into the load capacity of column members of lipped channel cross-section, cold formed from Type 304 stainless steel, subjected to concentric and eccentric compression loading. The main aims of this investigation were to determine the effects which the non-linearity of the stress-strain behaviour of the material would have on the column behaviour under concentric or eccentric loading. Stress-strain curves derived from tests and design codes are incorporated into non-linear finite element analyses of eccentrically loaded columns and the results obtained are compared with those obtained on the basis of experiments on stainless steel channel columns with the same properties and dimensions. Comparisons of the finite element results and the test results are also made with existing design specifications and conclusions are drawn on the basis of the comparisons. 

Description of Nonproportional Cyclic Plasticity of Stainless Steel by a Two-Surface Model

1991 ◽  
Vol 58 (3) ◽  
pp. 623-630 ◽  
Author(s):  
Yukio Takahashi ◽  
Takashi Ogata
Keyword(s):  
Stainless Steel ◽  
Austenitic Stainless Steels ◽  
Strain Range ◽  
Cyclic Plasticity ◽  
304 Stainless Steel ◽  
Surface Model ◽  
Path Condition ◽  
Type 304 ◽  
Type 304 Stainless Steel

A simple elastic-plastic constitutive model based on the two-surface theory is developed to describe deformation behavior of austenitic stainless steels under multiaxial cyclic loading. Dependency of saturated stress range both on strain range and the proportionality of loading is considered. To establish a precise procedure for determination of material constants for nonproportional loading, the intervariable relation in the axial-torsional circular strain-path condition is studied in detail. A full procedure is then developed for determination of all material parameters. Finally, the effectiveness of the present model is demonstrated by application to axial-torsional cyclic tests for type 304 stainless steel at 550°C.

OUTOKUMPU TYPE 630

Alloy Digest ◽  
2016 ◽  
Vol 65 (2) ◽  
Keyword(s):  
Fracture Toughness ◽  
Stainless Steel ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
High Performance ◽  
High Strength ◽  
Heat Treating ◽  
304 Stainless Steel ◽  
Type 304 ◽  
Type 304 Stainless Steel

Abstract Outokumpu Type 630 is a martensitic age hardenable alloy of composition 17Cr-4Ni. The alloy has high strength and corrosion resistance similar to that of Type 304 stainless steel. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: SS-1238. Producer or source: Outokumpu High Performance Stainless.

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