Dynamic strength of tungsten-nickel-cobalt alloys

Satapathy, S.; Cazamias, J.; Bless, S.; Gee, R. Monfredo; Meyer, L.; Brar, N.
April 2000
AIP Conference Proceedings;2000, Vol. 505 Issue 1, p463
Academic Journal
We performed split Hopkinson bar (SHB) tests, Taylor impact tests, and dynamic bend tests on 91%W-6%Ni-3%Co alloys to characterize strain-rate effects on stress-strain behavior. Materials from two manufacturers were tested. The fracture process of this material was examined. This alloy shows no appreciable work or strain-rate hardening at high strain rates. The dynamic flow stress was 2.2 ± .3 GPa.


Related Articles

  • Dynamic strength and edge effects at spall fracture for titanium alloys of varying oxygen content. Razorenov, S. V.; Kanel, G. I.; Utkin, A. V.; Bogach, A. A.; Burkins, M.; Gooch, W. A. // AIP Conference Proceedings;2000, Vol. 505 Issue 1, p415 

    The results of VISAR free-surface velocity measurements for Ti-6A1-4V alloys with different oxygen content and the HEL, the spall strength, the spall fracture energy data are presented. The peak shock stress was varied from 4 to 75 GPa, the load duration from ~10[SUP-7] s to ~10[SUP-5] s. The...

  • Analysis of Acoustic Emission Signals during Tensile Deformation of Fe-Si Steels with Various Silicon Contents. Khan, Sabrina; Chivavibul, Pornthep; Sedlak, Petr; Arai, Satoshi; Enoki, Manabu // Metallurgical & Materials Transactions. Part A;Aug2013, Vol. 44 Issue 8, p3623 

    A systematic investigation was performed on the deformation mechanism of Fe-Si steels with various silicon contents (2, 3, and 4.5 wt pct Si) by analyzing frequency distribution of acoustic emission (AE) coupling with fracture surface observation. AE signals were recorded during tensile tests at...

  • Calibration of Stress-triaxiality Dependent Crack Formation Criteria: A New Hybrid Experimental—Numerical Method. D. Mohr; S. Henn // Experimental Mechanics;Dec2007, Vol. 47 Issue 6, p805 

    Abstract  A new experimental technique has been developed to investigate the onset of fracture in metals at low and intermediate stress triaxialities. The gage section of a flat specimen has been designed such that cracks are most likely to initiate within the specimen center, remote from...

  • A method for the evaluation of regular components of the stress field in the plastic zone near the tip of a mode-I crack. Shlyannikov, V. // Strength of Materials;May2006, Vol. 38 Issue 3, p248 

    We propose a method aimed at the evaluation of the amplitude of singularity and dimensionless angular distributions of the second terms in the expansions of stresses, strains, and displacements in the plastic zone in the vicinity of the crack tip. The method is based on the combination the...

  • Failure During Sheared Edge Stretching. Levy, B. S.; Tyne, C. J. // Journal of Materials Engineering & Performance;Dec2008, Vol. 17 Issue 6, p842 

    Failure during sheared edge stretching of sheet steels is a serious concern, especially in advanced high-strength steel (AHSS) grades. The shearing process produces a shear face and a zone of deformation behind the shear face, which is the shear-affected zone (SAZ). A failure during sheared edge...

  • Material Failure Modelling in Metals at High Strain Rates. Panov, Vili; Vignjevic, Rade; Bourne, Neil; Millet, Jerremy // AIP Conference Proceedings;2006, Vol. 845 Issue 1, p646 

    To account for the physical mechanisms of failure, the concept of thermal activation of damage and failure has been adopted as basis for this material model development. This basic assumption makes the proposed approach compatible with the Mechanical Threshold Stress (MTS) model, which was used...

  • Ductile Fracture Criteria Based on Mesoscopic Void-Damage of Metals under Plastic Forming. Daofu Tang; Lianfa Yang // Applied Mechanics & Materials;2014, Issue 630-642, p620 

    In the process of plastic forming of metals, ductile fracture is an important factor influencing the improvement of forming limit of metals, while ductile fracture criteria can predict when and where ductile fracture occurs. Some conventional ductile fracture criteria based on mesoscopic...

  • A study of the cutting modes in the grooving of tungsten carbide. Liu, K.; Li, X.P.; Rahman, M.; Liu, X.D. // International Journal of Advanced Manufacturing Technology;Sep2004, Vol. 24 Issue 5/6, p321 

    In this paper, the cutting modes for grooving a tungsten carbide work material are investigated and presented. The grooving tests were carried out on an inclined workpiece surface using a solid CBN tool on a CNC lathe. The experimental results indicated that there was a transition from a ductile...

  • The Effect of Material Cleanliness on Dynamic Damage Evolution in 10100 Cu. Thissell, W. Richards; Zurek, Anna K.; Macdougall, Duncan A. S.; Miller, David; Everett, Richard; Geltmacher, Andrew; Brooks, Robert; Tonks, Davis // AIP Conference Proceedings;2002, Vol. 620 Issue 1, p475 

    Two different plates of 10100 Cu (> 99.99 % Cu) were incipiently failed using flyer plate impact in a gas gun equipped with soft recovery. One plate has a grain size of 53 µm and the other, 63 µm. The cleanliness of the plates was assessed using the cold crucible melt technique. The...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics