Relationship between 0.2% Proof Stress and Vickers Hardness of Work-hardened Low Carbon Austenitic Stainless Steel, 316SS

三郎, 松岡

doi:10.1299/kikaia.70.1535

Cited by 28 publications

(5 citation statements)

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“…Proportionality of hardness and tensile strength is well known. Proportionality of hardness and yield stress is also discussed for various materials [31], in which data for low alloy steel are shown. The method to predict yield stress of FGHAZ is as follows; Hardness of uniform FGHAZ material was Hv193 [20], and yield stress at 650℃ is assumed to be 200MPa as shown in Figure 10 expresses the rupture time from analysis and experiment; the ratio of predicted and experimental rupture time was 1.1 for X-groove and 1.8 for U-groove, i.e.…”

Section: J O U R N a L P R E -P R O O Fmentioning

confidence: 99%

Creep damage analysis of mod.9Cr-1Mo steel welds considering void mechanics modeling

Honda

Fukahori

Tokiyoshi

et al. 2021

International Journal of Pressure Vessels and Piping

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Section: J O U R N a L P R E -P R O O Fmentioning

confidence: 99%

Creep damage analysis of mod.9Cr-1Mo steel welds considering void mechanics modeling

Honda

Fukahori

Tokiyoshi

et al. 2021

International Journal of Pressure Vessels and Piping

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“…8, the weld metal is slightly hard. When the yield stress of the weld metal was estimated from the relation between the yield stress and Vickers hardness [10], that was about 330 MPa. However, in the weld metal (WM), σx evaluated by the 2θ-sin 2 ψ method exceed the yield stress of the weld metal.…”

Section: Residual Stress Distributionsmentioning

confidence: 99%

Improving accuracy of X-ray stress measurement in welds with texture

Tsuji

Okano

Mochizuki

2015

QUARTERLY JOURNAL OF THE JAPAN WELDING SOCIETY

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Evaluating the residual stress in welds is great important, and X-ray stress measurements are superior to other stress measurement methods because they are nondestructive and provide high-resolution results. However, it is well known that texture in welds is found in some materials such as austenitic stainless steel, and that such texture can greatly reduce the measurement accuracy. Although much knowledge regarding the application of X-ray stress measurement to materials with texture has been accumulated, most studies have considered texture under uniaxial stress. However, weld residual stress is typically multi-axial stress. In this study, an attempt was made to improve the accuracy of X-ray residual-stress measurements for welds with texture. To evaluate the stress in welds with texture under multi-axial stress, a new method was developed for evaluating plane stress from the elastic compliance, the value fraction of the crystal, and measurements in two orthogonal directions. A new method was also developed for evaluating the value fraction of the crystal in welds with texture. Moreover, in a SUS316L weld specimen, the residual stress evaluated by the proposed method agreed very well with that evaluated by the stress relief method. Thus, the proposed method has the potential to be effective for measuring residual stress in welds with texture.

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“…Meanwhile, Hv also has a proportional relation with  UTS for each metal, but the slope differs depending on the material. This could be caused by the difference in work hardening behaviors [17].…”

Section: Relationship Between Total Strength and Total Hardnessmentioning

confidence: 99%

New Quantitative Analysis of Contributing Factors to Strength of Disk Superalloys

et al. 2012

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The contributions of multiple strengthening factors to the 0.2% flow stress have been studied in a cast and wrought Ni-Co base disk superalloy with varying grain size, twin fraction and bimodal or trimodal ′ size distributions. The alloy was heat-treated within the ′ sub-and super-solvus temperature ranges between 1100 o C to 1180 o C, followed by two step aging heat-treatment. The contribution of each strengthening factor are analyzed by measuring its Vickers hardness at over a structural scale ranging from nano to micro levels and then by converting the hardness differences to the contribution to the 0.2% flow stress on the basis of the empirical relation:  0.2 =2.46Hv. The results clearly show that the contribution of grain boundary strengthening decreased and reached zero with increasing solution temperature. The behavior followed Hall-Petch effect and Zener's pinning model, and strongly depended on the size and volume fraction of pinning primary ′ that is un-dissolved during solution treatment. Meanwhile, the contributions of secondary and tertiary ′ precipitation strengthening increased with increasing temperature. The behaviors also strongly depend on the volume fraction of the primary ′ since the designed total volume fraction of ′ of the alloy is approximately 0.5. As a result, the combinations of these strengthening factors lead to the maximum flow stress at solution temperature of 1135 o C. This would suggest that the primary ′ plays an important role to optimize the microstructure combination through the solution heat-treatment.

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Relationship between 0.2% Proof Stress and Vickers Hardness of Work-hardened Low Carbon Austenitic Stainless Steel, 316SS

Cited by 28 publications

References 0 publications

Creep damage analysis of mod.9Cr-1Mo steel welds considering void mechanics modeling

Creep damage analysis of mod.9Cr-1Mo steel welds considering void mechanics modeling

Improving accuracy of X-ray stress measurement in welds with texture

New Quantitative Analysis of Contributing Factors to Strength of Disk Superalloys

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