US EPA

4849185 

Journal Article 

Hot Deformation Behavior of Pure Molybdenum (Mo) 

Wang, AiQin; Guo, HuiDan; Ju, YanP; Xie, JPei; Cheng, YanF 

2017 

9 

9 

1493-1500 

10.1166/sam.2017.3188 

WOS:000412929100008 

In this study, the hot compression tests of pure molybdenum (Mo) slab were conducted in the deformation temperature range of 1333-1573 K with an increment of 353 K and the strain rates of 0.01-10 s(-1) on the Gleeble-1500D thermal simulator. The stress-strain curves were plotted and the constitutive equation was established based on stress-strain curves and hyperbolic sine model with Zener-Hollomon. The results indicate that the average heat activation energy is 332815.285 J/mol and the constitutive equation is epsilon(over dot) = e(24.8)[sinh(0.0043 sigma)](7.06)exp(-332815.285/RT). The processing properties of material is sensitive to both temperature and strain rate. The mutual validation of stress-strain curves, thermal processing diagram, the macro-morphological changes and microstructure evolution were studied. The detailed studied confirmed the optimum processing temperature range of 1493-1573 K with strain rate of 0.01-0.1 s(-1). 

Molybdenum (Mo); Constitutive Equation; Stress-Strain; Optimum Processing Range