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Monday, July 27, 2020 | History

4 edition of Study of Bauschinger effect in various spring steels found in the catalog.

Study of Bauschinger effect in various spring steels

Jun Yan

Study of Bauschinger effect in various spring steels

by Jun Yan

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  • 27 Currently reading

Published by National Library of Canada in Ottawa .
Written in English


Edition Notes

Thesis (M.A.Sc.) -- University of Toronto, 1998.

SeriesCanadian theses = -- Thèses canadiennes
The Physical Object
FormatMicroform
Pagination1 microfiche : negative. --
ID Numbers
Open LibraryOL19767681M
ISBN 100612456013
OCLC/WorldCa51582783

The study of low cyclic fatigue behaviour of AZ61 magnesium alloy. (). Cyklická plasticita a nízkocyklová únavová odolnost kovových materiálů. Damage and stress state influence on the Bauschinger effect in aluminum alloys. Effect of porosity and tension-compression asymmetry on the Bauschinger effect in porous sintered steels. (). Various ways of defining the magnitude of the Bauschinger effect are explained. One is a conventional approach as suggested by Welter, the other a technique which takes strain-hardening into account. The results show the Bauschinger effect to be independent of yield strength for three different strength levels of the martensitic material.

Study of Bauschinger Effect in X80 Steel and Bending Strength p A Method to Calculate the True Stress and True Strain for Tensile Test of Plastic p Structural Characteristics Magnesium Alloys along of the Equal Channel Angular Pressing p Experimental Research on Mechanical Properties of a New TiNi Shape Memory Alloy. springback due to analytical complexity involvement in consideration of Bauschinger the sheet metal undergoes cyclic deformation, Bauschinger effect has a significant influence on the stress calculation. Reviews on various aspects of the Bauschinger effect have been contributed by Abel and Muir [20], Sowerby and Uko [23].

the Bauschinger effect and transient behavior subjected to cyclic loading conditions. Then, a finite element model was created to simulate the U-draw bending process using ABAQUS. Simulations were then conducted to predict the spring-back of DP high-strength steel in U-draw bending with geometry provided in the NUMISHEET’ bench-mark. @article{osti_, title = {Effects of strain state and strain rate on deformation-induced transformation in stainless steel - 2. microstructural study}, author = {Murr, L E and Staudhammer, K P and Hecker, S S}, abstractNote = {The authors examined the transformation products from uniaxial and biaxial experiments at both low and high strain rates to check how well the assumptions made.


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Study of Bauschinger effect in various spring steels by Jun Yan Download PDF EPUB FB2

Study of Bauschinger Effect in Various Spring Steels By Jun Yan Degree of Master of Applied Science, Department of Metallurgy and Materials Science University of Toronto Abstract It is recognized that the effective life of automotive suspension springs could be ended by yielding rather than fracture.

The industry describes this problem as Cited by: 4. I am looking for books or technical references: "Effect of Silicon on Bauschinger effect in spring steels". search using Google Scholar and include the keywords "sag resistance" as this is correlated to the Bauschinger Effect, and will return more hits.

Study of Bauschinger Effect in Various Spring Steels. As part of a larger programme of study of anisotropy and the Bauschinger effect in cold-worked metals, I conducted a series of tests on deformed and age-hardened mild steel Cited by: 5.

In this study, the tension-unloading-reloading (TUR) test and XRD analysis have been employed to investigate non-linear recovery through Bauschinger Effect (BE) measurement at different pre-strain levels. The results demonstrated that dual phase steels exhibited the strong by: 2.

Quantitative Descriptions of Bauschinger Effect. In Sections andthe Bauschinger effect was qualitatively discussed. It was pointed out that the Bauschinger effect results from back stress hardening induced by elastic interaction between dislocations rather than slip resistance hardening via the Taylor equation.

Download Citation | Study on the Bauschinger effect with increasing of tensile strength in dual phase steel sheets | The purpose of this study is to investigate the deformation property, under a.

J. Yan, ‘Study of Bauschinger Effect in Various Spring Steels’ Degree of Master of Applied Science,Department of Metallurgy and Materials Science, University of Toronto, 5. Sadagopan, D. Urban, ‘Formability Characterization Of A New Generation Of High Strength Steels’ Final report of AISI/DOE Technology Roadmap Program, March   Bouschinger Effect is also known as strain observe the figure given below, Region OA -This region is Elastic Region in this reagion, if we unload the material it will follow the same path in the reverse direction i.

Study on the Bauschinger effect with increasing of tensile strength in dual phase steel sheets K. Watanabe1, K. Natori1, T. Tanaka2 & Y. Imaida2 1Graduate School of Engineering, Doshisha University, Japan 2Faculty of Science and Engineering, Doshisha University, Japan Abstract The purpose of this study is to investigate the deformation property, under a high.

The Bauschinger effect of material should be also taken into account for obtaining more precise springback predictions of AHS steel sheets. In the past, different types of material constitutive laws such as isotropic hardening law, kinematic hardening law and mixed isotropic–kinematic hardening law [8] were developed and extended to be.

Han, Van Tyne, and Levy () sought to determine the effect for strain and strain rate on the Bauschinger effect response of three different steel alloys. The results of their study indicate. The springback phenomenon in sheet metal stamping will lead to problems in subsequent assembling, and cannot guarantee parts dimensional accuracy, it is necessary to research spring-back parts effect in part stamping molding.

Due to the high strength steel has a high yield strength, the springback after unloading increases, advanced high strength steel. The single crystal Bauschinger effect in Copper We studied the Bauschinger effect on a bent and straightened micro-sized single crystal copper beam in three subsequent cycles.

The reverse yield strengths (straightening step) are much smaller than those in forward loading (bending step). Abstract. A finite-element method has been employed to calculate the effect of the prestrain, particle size, volume fraction, and yield strength ratio of the constituent phases on the Bauschinger effect (BE) and residual phase stresses for ferrite-martensite two-phase steels.

The effects of cementite particles and subgrain boundaries on the work-hardening behaviour of spheroidized carbon steels were investigated by making direct measurements of residual internal stresses.

These internal stresses developed due to plastic incompatibilities between elastic particles and the surrounding elastic–plastic matrix. In this study, we characterize the Bauschinger effect by quantifying the isotropic and kinematic hardening in extruded aluminum alloy.

Reverse loading experiments were performed up to a prestrain of 5% in both tension-followed-by-compression and compression-followed-by-tension. However, there are reports that a spring-back phenomenon is likely to occur during metalworking with forming dies.

Prediction of the spring back phenomenon on steel sheets is expected to be possible with high accuracy by taking the Bauschinger effect, which was discovered by Julius Bauschinger, and applying it to simulations as a material.

A Bauschinger-effect factor is defined for linepipe steels, and a method is developed to calculate this factor using Co, no, and prestrain values.

The Bauschinger effect was found to increase with increasing prestrain up to ∼ 003, and it was more prominent when the reverse-flow stress was measured at small offsets (0) in the transient.

two sheets of dual phase steel with a different production lot, JSCY-1 and The mechanical properties of steels are listed in table 1. Evaluation test for the Bauschinger effect In order to observe the level of Bauschinger effect [7, 8], we conduct a compression-tensile test with various strain rates and amounts of pre.

In a study of the Bauschinger effect, data were collected from three sources in the published literature. Quantitative stress-strain data were taken from these papers, and the results re-analyzed.

The resulting database has 44 lots of sheet steels, including drawing quality, interstitial free, bake. The physical mechanism that produces the Bauschinger effect is of springs that are torqued to a pre-set level and the magnitude of the applied force is estimated from the linear spring constants.

( C for AISI versus C for DP); however, the microstructures of the two steels are considerably different. Both steels have.the literature data for bcc structures and strains.

The Bauschinger effect was measured during compression-tension testing of the two studied steels in the as-rolled and annealed conditions. The yield stress drop due to the Bauschinger effect has been found to increase with an.Bauschinger effect have a dominant role in the test results referred to herein, with load capacity reductions up to 38%.

Strain aging has been seen to be more significant than strain hardening for the rimming steel used in enhancing the capacity of the prestrained struts.

The experimental results are also compared with the current V.