Descriptors of temporal signatures of serrations in a low alloy steel

Gupta, Chandni; Kumawat, Bhupendra K.; Chakravartty, J.K.

doi:10.1016/j.msea.2014.10.032

Cited by 12 publications

(2 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These are typical stages observed during plastification in a tensile test of iron and steels, displaying a yield point phenomenon. 1,18 In the flow curves obtained for the pressure vessel steel, the linear region is found to lie within the strain range fraction of 0.3-0.9 of the respective uniform strain. The linear region is identified in the double logarithm space of the stress-strain plot as a straight line as shown in Fig.…”

Section: Resultsmentioning

confidence: 79%

“…One was a 20MnMoNi55 grade low-alloy steel of composition that is typical of western grade of reactor pressure vessel material. 17,18 The compositional of the low-alloy steel is given in Table 1. The microstructure of the steel was typical of a bainitic type structure with prior austenite grain boundary size of about 30 μm obtained by quenching (from 920°C) and tempering treatment (at 650°C for 25 h).…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of flow behaviour of iron and steel using power law models

Gupta

Kumawat

2017

Materials Science and Technology

Self Cite

View full text Add to dashboard Cite

The tensile flow behaviour of mechanically milled iron and a low-alloy steel are analysed using power law models that describe the evolution of stress–strain during a tensile test. A new analytical power law equation is presented that is shown to be superior to the Hollomon and Ludwigson equation to describe the room temperature flow properties of the low-alloy steel over a wide strain rate range. It not only provides a better fit to the homogenous flow curve of the low-alloy steel but also predicts the maximum strength without the prior knowledge of the uniform strain. The new equation also fitted the flow curves of mechanically milled iron with grain sizes in nano to micrometer range.

show abstract

Section: Resultsmentioning

confidence: 79%

Section: Methodsmentioning

confidence: 99%