The relationship between hardness and yield stress in irradiated austenitic and ferritic steels

Busby, Jeremy T.; Hash, M.C.; Was, Gary S.

doi:10.1016/j.jnucmat.2004.09.024

Cited by 422 publications

(143 citation statements)

References 12 publications

(22 reference statements)

Supporting

Mentioning

133

Contrasting

Order By: Relevance

“…For steel, values of hardness are commonly related to flow stress by diving by 3.03 [35], yet even with this reduction factor it is clear that all of the nanoindentation results reported here are affected by an ISE [34]. Because this affect is not well understood, the mechanical property data produced by nanoindentation is limited to relative comparison between irradiation conditions and materials, and provides little information on the macroscopic properties of the material.…”

Section: Comparison Of Nanoindentation Techniquesmentioning

confidence: 81%

Understanding the effects of ion irradiation using nanoindentation techniques

Hardie

Roberts

Bushby

2015

Journal of Nuclear Materials

103

View full text Add to dashboard Cite

The effects of ion irradiation in materials for research are usually limited to a shallow surface layer of the order of one micrometre in depth. Determining the mechanical properties of such irradiated materials requires techniques with high spatial resolution. Nanoindentation is a relatively simple method for investigating these shallow layers with the advantage that statistically rich data sets for elastic and plastic property values can be generated. However, interpretation of the results requires and understanding of the material response, including the extent of the plastic zone with respect to the irradiated layer, pile-up or sink-in of material around the indentation site that affect the calculated contact area and hence derived mechanical property values. An Fe + self-irradiated Fe12%Cr alloy was investigated with three different indenter tip geometries, a Cube corner, Berkovich and 10 micron radius indenter. Sharp indenters provide sufficiently small plastic zones to be contained within the irradiated layer but pop-in events and pile-up need to be taken into account for correct interpretation of the mechanical properties of the irradiated material.

show abstract

Section: Comparison Of Nanoindentation Techniquesmentioning

confidence: 81%

Understanding the effects of ion irradiation using nanoindentation techniques

Hardie

Roberts

Bushby

2015

Journal of Nuclear Materials

103

View full text Add to dashboard Cite

show abstract

“…In addition, there is also strong experimental evidence corroborating the linear relationship between microhardness and yield strength in 1000 series aluminum [22][23][24][25][26][27]. Some data show a deviation in the linear relationship between σ y and Hv in the softened state, but assume a y-intercept of zero, which is not necessarily consistent with experimental results, where y-intercepts of N 100 have been reported [28,29]. Therefore, it can generally be assumed that yield strength and microhardness measurements are proportional such that…”

Section: Contents Lists Available At Sciencedirectmentioning

confidence: 91%

Synergetic strengthening far beyond rule of mixtures in gradient structured aluminum rod

Moering

Malkin

et al. 2016

Scripta Materialia

View full text Add to dashboard Cite

Gradient structured metals have been reported to exhibit high strength and high ductility. Here we report that the strength of gradient structured aluminum rod is much higher than the value calculated using the rule of mixtures. The mechanical incompatibility in the gradient structured round sample produced 3D stress states, extraordinary strengthening and good ductility. An out of plane {111} wire texture was developed during the testing, which contributes to the evolution of the stress state and mechanical behavior.

show abstract

“…The hardness data can be used to estimate the change in yield strength using a relation developed by Busby et al [3]. While there are several possible routes to estimate yield strength from hardness, the most straightforward is given as:…”

Section: Hardness Resultsmentioning

confidence: 99%

“…Since the liquid density is primarily affected by temperature variations, the temperature dependence of FC-43 density needs to be determined accurately. The density-temperature relation of FC-43 was derived from the data obtained by measuring National Institute of Standards and Technology (NIST) traceable marble standards of known densities (2.699, 2.900 and 3.200 g/cm 3 ). The density data were fitted using both a linear function and an exponential function.…”

Section: Immersion Density Principlementioning

confidence: 99%