On the Tensile Strength and Hardness Relation for Metals

Datsko, Joseph; Hartwig, Laura; McClory, B.

doi:10.1361/105994901770344601

Cited by 30 publications

(8 citation statements)

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“…Apart from these, few methods were proposed for estimation of strength for metals using an indentation technique in the literature [4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

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On the Prediction of Strength from Hardness for Copper Alloys

Krishna

Gangwar

Jha

et al. 2013

Journal of Materials

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Hardness and strength values of over 55 copper alloys strengthened by solid solution strengthening, precipitation hardening, cold working, and dispersion strengthening were compiled. The yield strength (YS) and ultimate tensile strength (UTS) values of the copper alloys examined ranged between 50 to 1300 MPa and 200 to 1400 MPa, respectively. The compiled values were classified based on strain-hardening potential an indirect method to understand the effect of strain-hardening characteristics. Least squares regression analysis was employed to establish correlations between strength and Vickers hardness values. Strain-hardening potential showed a significant effect on the correlations. In all the cases, a linear relation was obtained for both YS and UTS with hardness for the entire range of values under analysis. Simple empirical equations were proposed to estimate the strength using bulk hardness. The proposed correlations obtained for the entire range of values were verified with experimental values. A good agreement was observed between experimental and predicted values.

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“…Apart from these, few methods were proposed for estimation of strength for metals using an indentation technique in the literature [4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

“…Most of the correlations available were obtained by analysis of data for steels [1][2][3][4][5][6][7][8][9][10]. Therefore, an attempt has been made to propose correlations to estimate the strength from hardness for copper alloys.…”

Section: Introductionmentioning

confidence: 99%

On the Prediction of Strength from Hardness for Copper Alloys

Krishna

Gangwar

Jha

et al. 2013

Journal of Materials

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“…During the process of warm deformation, work hardening will take place in the samples, accompanied by dynamic recovery softening and static softening within the gap moment of the deformation, although the work hardening effect is dominant [7]. The hardness and yield strength of the metals are dependent on the degree of work hardening and softening [8].…”

Section: Introductionmentioning

confidence: 99%

The Effect of Rolling Temperature on the Microstructure and Mechanical Properties of Surface-Densified Powder Metallurgy Fe-Based Gears Prepared by the Surface Rolling Process

Chen

Peng

et al. 2017

Metals

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Abstract:In this investigation, the surface-rolling process was performed to improve the performance of PM (powder metallurgy) parts. Different rolling temperatures were applied and the effect of rolling temperature on the microstructure and mechanical properties of the surface dense layers in the samples were investigated. In the study, room temperature and temperatures of 100 • C, 200 • C, 300 • C were studied during the rolling process. The results confirmed that the sample prepared with a pre-heated temperature of 200 • C had the lowest porosity at the surface area. It also exhibited the highest surface hardness and wear resistance. The optimum rolling temperature was determined to be 200 • C and the related mechanism was discussed.

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“…In recent years, hardness testing has become established as a commonly used practical method to predict mechanical and material properties of steel (Cahoon, Broughton, & Kutzak, 1971;Datsko, Hartwig, & McClory, 2001). As a result, a significant volume of literature is available on this subject.…”

Section: Introductionmentioning

confidence: 99%

Relationship between hardness and plastically deformed structural steel elements

Nashid¹,

Clifton²,

Ferguson³

et al. 2015

Earthquakes and Structures

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A field based non-destructive hardness method is being developed to determine plastic strain in steel elements subjected to seismic loading. The focus of this study is on the active links of eccentrically braced frames (EBFs). The 2010/2011 Christchurch earthquake series, especially the very intense February 22 shaking, which was the first earthquake worldwide to push complete EBF systems into their inelastic state, generating a moderate to high level of plastic strain in EBF active links for a range of buildings from 3 to 23 storeys in height. Plastic deformation was confined to the active links. This raised two important questions: what was the extent of plastic deformation and what effect does that have on post-earthquake steel properties? A non-destructive hardness test method is being used to determine a relationship between hardness and plastic strain in active link beams. Active links from the earthquake affected, 23-storey Pacific Tower building in Christchurch are being analysed in the field and laboratory. Test results to date show clear evidence that this method is able to give a good relationship between plastic strain and demand. This paper presents significant findings from this project to investigate the relationship between hardness and plastic strain that warrant publication prior to the completion of the project. Principal of these is the discovery that hot rolled steel beams carry manufacturing induced plastic strains, in regions of the webs, of up to 5%.

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On the Tensile Strength and Hardness Relation for Metals

Cited by 30 publications

References 0 publications

On the Prediction of Strength from Hardness for Copper Alloys

On the Prediction of Strength from Hardness for Copper Alloys

The Effect of Rolling Temperature on the Microstructure and Mechanical Properties of Surface-Densified Powder Metallurgy Fe-Based Gears Prepared by the Surface Rolling Process

Relationship between hardness and plastically deformed structural steel elements

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