Experimental Investigation of Dynamic Properties of AerMet 100 Steel

The dynamic properties characterization of AerMet 100 Steel at four different strain rates, namely 560/s, 1200/s, 2500/s and 4200/s were carried by a SHPB system. The stress-strain curves at these strain rates are obtained and they were compared with the quasi-static test results to analyze its stra...

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Bibliographic Details
Published in:Procedia engineering 2015, Vol.99, p.1459-1464
Main Authors: Hu, Dayong, Meng, Kangpei, Jiang, Hanlin
Format: Article
Language:English
Subjects:
AerMet 100
dynamic properties characterization
strain rate hardening
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Summary:The dynamic properties characterization of AerMet 100 Steel at four different strain rates, namely 560/s, 1200/s, 2500/s and 4200/s were carried by a SHPB system. The stress-strain curves at these strain rates are obtained and they were compared with the quasi-static test results to analyze its strain effects. By comparing the stress-strain curves under different strain rates and quasi-static results, it can be found that the AerMet 100 shows strong strain rate sensitivity. For example, its yield stress under quasi-static compression is 1800MP while the yield stress is around 2300MP under strain rate 4200/s with an incensement of 24%. The hardening modulus under static compression is larger than that under dynamic compression due to the softening by the high temperature during high velocity impacting.
ISSN:1877-7058
1877-7058
DOI:10.1016/j.proeng.2014.12.685