Investigation on constitutive models characterizing fcc and bcc metals over wide temperature and str

来源 :IUTAM Symposium on Recent Development of Experimental Techni | 被引量 : 0次 | 上传用户:woshixiaomei110
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  Both descriptive and predictive capabilities of two phenomenological (JC and KHL) and five physically based constitutive models (PB, NNL, ZA, VA, and RK(MRK)) are investigated and compared systematically, in characterizing thermomechanical behavior of pure copper, 603 steel[1,2], and 93W-4.9Ni-2.1Fe[3], respectively.Flow stress of the materials were tested in uniaxial compression at temperatures ranging from 173 K to 873 K, and strain rates ranging from 0.001 s-1 to 4500 s-1.Hopkinson pressure bar technique, respectively.
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