The Effect of Strain Rate on Yielding in High Strength Steels
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The effect of strain rates ranging from 10−4 to 10 in/in/sec on the yield strengths of several high strength alloy steels is investigated. Quenched and tempered-type alloys exhibit two regions of strain-rate sensitivity with the strain rate dividing the sensitive and insensitive regions varying from 0.5 to greater than 10 in/in/sec, depending on composition, microstructure and grain size. At the higher rates a power-law relationship is found which is consistent with a yielding model involving breakaway of dislocations from solute atmospheres. Maraging steel exhibits a continuous power law-strain rate sensitivity over the entire range.
2013 ◽
Vol 20
(6)
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pp. 68-74
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2019 ◽
Vol 754
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pp. 140-151
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2007 ◽
Vol 539-543
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pp. 4386-4390
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2006 ◽
Vol 503-504
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pp. 31-36
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2011 ◽
Vol 82
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pp. 124-129
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2019 ◽
Vol 2019
(1)
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pp. 000480-000487
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