High temperature sensitivity of notched AISI 304L stainless steel tests

Lu, Wei‐Yang; Horstemeyer, M.F.; Korellis, John S.; Grishabar, R.B.; Mosher, Daniel A.

doi:10.1016/s0167-8442(98)00051-2

Cited by 22 publications

(10 citation statements)

References 10 publications

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“…The contribution of deformation processes in the development of voids has been well established. While the growth mechanisms can vary, say, with the temperature of testing, [19] their nucleation invariably occurs where inhomogeneous deformation takes place. In Table I, an overview of research efforts in correlating fracture features (mainly related to dimple geometry and extent) with microstructural constituents (mainly particle size and distribution) and testing variables is given.…”

Section: Introductionmentioning

confidence: 99%

Correlation of Fractographic Features with Mechanical Properties in Systematically Varied Microstructures of Cu-Strengthened High-Strength Low-Alloy Steel

Das

Tarafder

2009

Metall Mater Trans A

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Fracture is often the culmination of continued deformation. Therefore, it is probable that a fracture surface may contain an imprint of the deformation processes that were operative. In this study, the deformation behavior of copper-strengthened high-strength low-alloy (HSLA) 100 steel has been investigated. Systematic variation of the microstructure has been introduced in the steel through various aging treatments. Due to aging, the coherency, size, shape, and distribution of the copper precipitates were changed, while those of inclusions, carbides, and carbonitrides were kept unaltered. Two-dimensional dimple morphologies, quantified from tensile fracture surfaces, have been correlated to the nature of the variation of the deformation parameters with aging treatment.

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Section: Introductionmentioning

confidence: 99%

Correlation of Fractographic Features with Mechanical Properties in Systematically Varied Microstructures of Cu-Strengthened High-Strength Low-Alloy Steel

Das

Tarafder

2009

Metall Mater Trans A

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“…These stress concentrators require that local stresses not exceed certain stress limits which are typically well below those that would be acceptable in uniform dimension components. Currently, much attention has been paid to notch and cracks effect especially in reactor structural components due to the ductility loss caused by irradiating environments [10][11][12]. It has been shown that notch in structural components give rise to localized stress concentration which decreases the maximum load the component can sustain and may generate a crack or lead to early crack initiation [13].…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Boronized AISI 316, AISI 1040, AISI 1045 and AISI 4140 Steels

2009

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In this study, some mechanical properties of borided and unborided four steels were investigated. Boronizing of steels was performed by powder pack method at 1210 K for 4 h. The hardness of borides, boride layer thickness and room temperature tensile properties were measured and it was observed that hardness and tensile properties strongly depend on chemical composition of steels. In addition, the effect of a notch on impact behavior was examined by conducting the Charpy tests on borided and unborided steels. The greatest notch toughness was found for a steel AISI 316 with a microstructure consisting of different C, Ni and Cr chemical composition compared to AISI 1040, 1045 and 4140 steels.

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“…This geometry has been widely used because the configuration of the notch affects the stress triaxiality which is known to promote void growth [11]. Figure 2.1 shows four different geometries of decreasing severity, with specimen R1 inducing relatively high triaxiality (and hence increased void growth) and R4 inducing relatively low triaxiality.…”

Section: Anisotropic Behaviormentioning

confidence: 99%

Quantifying the debonding of inclusions through tomography and computational homology.

Lu¹,

Johnson

Mota³

et al. 2010

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This report describes a Laboratory Directed Research and Development (LDRD) project to use of synchrotron-radiation computed tomography (SRCT) data to determine the conditions and mechanisms that lead to void nucleation in rolled alloys.The Advanced Light Source (ALS) at Lawrence Berkeley National Laboratory (LBNL) has provided SRCT data of a few specimens of 7075-T7351 aluminum plate (widely used for aerospace applications) stretched to failure, loaded in directions perpendicular and parallel to the rolling direction. The resolution of SRCT data is 900nm, which allows elucidation of the mechanisms governing void growth and coalescence.This resolution is not fine enough, however, for nucleation. We propose the use statistics and image processing techniques to obtain sub-resolution scale information from these data, and thus determine where in the specimen and when during the loading program nucleation occurs and the mechanisms that lead to it.Quantitative analysis of the tomography data, however, leads to the conclusion that the reconstruction process compromises the information obtained from the scans. Alternate, more powerful reconstruction algorithms are needed to address this problem, but those fall beyond the scope of this project. 4 AcknowledgmentsWe gratefully acknowledge the support of the Advanced Light

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High temperature sensitivity of notched AISI 304L stainless steel tests

Cited by 22 publications

References 10 publications

Correlation of Fractographic Features with Mechanical Properties in Systematically Varied Microstructures of Cu-Strengthened High-Strength Low-Alloy Steel

Correlation of Fractographic Features with Mechanical Properties in Systematically Varied Microstructures of Cu-Strengthened High-Strength Low-Alloy Steel

Mechanical Properties of Boronized AISI 316, AISI 1040, AISI 1045 and AISI 4140 Steels

Quantifying the debonding of inclusions through tomography and computational homology.

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