Strain Aging behavior In NiAI Microalloyed with Interstitial and Substitutional Solutes

1996 ◽  
Vol 460 ◽  
Author(s):  
M. L. Weaver ◽  
R. D. Noebe ◽  
M. J. Kaufman
Keyword(s):  
Single Crystals ◽  
Dynamic Strain Aging ◽  
Strain Aging ◽  
Dynamic Strain ◽  
Aging Behavior ◽  
Co Doping ◽  
Polycrystalline Alloys ◽  
Substitutional Impurities

ABSTRACTDynamic strain aging has been investigated in polycrystalline NiAl alloys containing combined additions of interstitial and substitutional impurities. The results indicate that strain aging can be enhanced in polycrystalline alloys containing concentrations of silicon or iron in excess of 0.15 at.% in addition to conventional levels of carbon. This co-doping leads to very dramatic strain aging events, comparable to those typically observed in single crystals. This effect will be discussed with respect to conventional theories of strain aging.

scholarly journals Manifestations of dynamic strain aging in soft-oriented NiAl single crystals

1996 ◽  
Vol 27 (11) ◽  
pp. 3542-3557 ◽  
Author(s):  
M. L. Weaver ◽  
M. J. Kaufman ◽  
R. D. Noebe
Keyword(s):  
Single Crystals ◽  
Dynamic Strain Aging ◽  
Strain Aging ◽  
Dynamic Strain

Effect of finishing rolling temperature on fire resistance and dynamic strain aging behavior of a structural steel

2008 ◽  
Vol 43 (17) ◽  
pp. 6005-6011 ◽  
Author(s):  
Welbert Ribeiro Calado ◽  
Odair José dos Santos ◽  
Cynthia Serra Batista Castro ◽  
Ronaldo Neves Barbosa ◽  
Berenice Mendonça Gonzalez
Keyword(s):  
Structural Steel ◽  
Dynamic Strain Aging ◽  
Fire Resistance ◽  
Strain Aging ◽  
Rolling Temperature ◽  
Dynamic Strain ◽  
Aging Behavior

Dynamic strain aging of Al 0.3 CoCrFeNi high entropy alloy single crystals

2015 ◽  
Vol 108 ◽  
pp. 80-83 ◽  
Author(s):  
Hiroyuki Y. Yasuda ◽  
Kyosuke Shigeno ◽  
Takeshi Nagase
Keyword(s):  
Single Crystals ◽  
Dynamic Strain Aging ◽  
Strain Aging ◽  
Dynamic Strain ◽  
High Entropy Alloy ◽  
High Entropy

Dynamic strain aging and serrated flow in MnO

1986 ◽  
Vol 1 (1) ◽  
pp. 124-129 ◽  
Author(s):  
K. C. Goretta ◽  
J. L. Routbort ◽  
T. A. Bloom
Keyword(s):  
Single Crystals ◽  
Yield Stress ◽  
Dynamic Strain Aging ◽  
Strain Aging ◽  
Dynamic Strain ◽  
Local Defect ◽  
Serrated Flow ◽  
Partial Pressures ◽  
Effects Of Aging ◽  
Segregation Of Impurities

The effects of aging on the upper yield stress τup and serrated flow have been studied in MnO single crystals at 900 °C for oxygen partial pressures ρO2 of 10−11 and 10−7 Pa. Aging initially increases τup as a consequence of segregation of aliovalent impurities to dislocations for both ρO2 values. For long aging times and ρO2 = 10-11 Pa, serrated flow accompanied by solute softening is observed. The data fit predictions of a Portevin-Le Chatelier model for serrations, but with impurity atmospheres causing softening instead of hardening. This is believed to result from changes in local defect equilibria caused by segregation of impurities with valences greater than two to dislocations.

Microstructure and dynamic strain aging behavior in oxide dispersion strengthened 91Fe-8Ni-1Zr (at%) alloy

2018 ◽  
Vol 725 ◽  
pp. 503-509 ◽  
Author(s):  
Dallin J. Barton ◽  
Chaitanya Kale ◽  
B. Chad Hornbuckle ◽  
Kristopher A. Darling ◽  
Kiran N. Solanki ◽  
...  
Keyword(s):  
Dynamic Strain Aging ◽  
Strain Aging ◽  
Oxide Dispersion Strengthened ◽  
Dynamic Strain ◽  
Oxide Dispersion ◽  
Aging Behavior
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