Mechanical Behavior and Flow Mechanisms in Refractory Metal Composites

1994 ◽  
Author(s):  
I. Weiss ◽  
R. Srinivasan
Keyword(s):  
Mechanical Behavior ◽  
Refractory Metal ◽  
Metal Composites ◽  
Flow Mechanisms

Fracture and Fatigue of Niobium Silicide Alloys

2008 ◽  
Vol 1128 ◽  
Author(s):  
David M. Herman ◽  
Bernard P Bewlay ◽  
Laurent Cretegny ◽  
Richard DiDomizio ◽  
John Lewandowski
Keyword(s):  
High Temperature ◽  
Mechanical Behavior ◽  
Refractory Metal ◽  
Fatigue Behavior ◽  
Metal Phase ◽  
Metal Silicide ◽  
Alloy Composite ◽  
Niobium Silicide ◽  
Composite Properties

AbstractThe fracture and fatigue behavior of refractory metal silicide alloys/composites is significantly affected by the mechanical behavior of the refractory metal phase. This paper reviews some of the balance of properties obtained in the alloys/composites based on the Nb-Si system. Since some of the alloy/composite properties are dominated by the behavior of the refractory metal phase, the paper begins with a review of data on monolithic Nb and its alloys. This is followed by presentation of results obtained on Nb-Si alloys/composites and a comparison to behavior of some other high temperature systems.

scholarly journals Tunable mechanical behavior of graphene nanoribbon-metal composites fabricated through an electrocharge-assisted process

2021 ◽  
Vol 800 ◽  
pp. 140289
Author(s):  
Christopher M. Shumeyko ◽  
Xiaoxiao Ge ◽  
Christopher J. Klingshirn ◽  
Lourdes Salamanca-Riba ◽  
Daniel P. Cole
Keyword(s):  
Mechanical Behavior ◽  
Graphene Nanoribbon ◽  
Metal Composites

Mechanical Behavior of Ternary and Quaternary Rual Alloys

2002 ◽  
Vol 753 ◽  
Author(s):  
T. K. Nandy ◽  
Q. Feng ◽  
D. Banerjee ◽  
M. F. X. Gigliotti ◽  
T. M. Pollock
Keyword(s):  
Mechanical Behavior ◽  
Room Temperature ◽  
Rate Sensitivity ◽  
Intermetallic Alloys ◽  
Compression Tests ◽  
Solid Solution Strengthening ◽  
Deformation Substructure ◽  
Substructure Analysis ◽  
Flow Mechanisms ◽  
Solution Strengthening

ABSTRACTThe mechanical behavior of RuAl-base intermetallic alloys with alloying additions of boron, niobium and platinum has been investigated. Compression tests have been performed at room temperature and 973 K. While the addition of alloying elements results in solid solution strengthening, the strain-rate sensitivity and the activation volumes do not show a significant variation, thereby suggesting that the macroscopic flow mechanisms are not strongly affected. Deformation substructure analysis of the niobium-containing alloy shows the presence of <100> and <110> dislocations, while the platinum-containing alloy additionally contains a significant density of <111> dislocations.

Studies of Sputter Deposited CU1-XTAX Alloys

1993 ◽  
Vol 308 ◽  
Author(s):  
Hong Wang ◽  
M. J. Zaluzec ◽  
Y. Liu ◽  
J. Mazumder ◽  
J. M. Rigsbee
Keyword(s):  
Refractory Metal ◽  
Elevated Temperatures ◽  
High Strength ◽  
Face Centered Cubic ◽  
Structure Property ◽  
Metal Composites ◽  
Face Centered ◽  
Sputter Deposited ◽  
Mutual Solubilities ◽  
Rf Sputter Deposition

ABSTRACTCopper-refractory metal composites/alloys are of interest for aerospace and related applications requiring good thermal conductivity and high strength at elevated temperatures[1]. These materials, due to generally very low mutual solubilities, may allow high strength microstructures to be developed which are stable at temperatures exceeding those suitable for precipitation strengthened alloys. Phase stability and mechanical property characteristics of bulk fabricated Cu-refractory metal composites were recently reviewed[2-3]. This paper reports the results of structure-property studies of a series of Cu1–xTax alloys created by RF sputter deposition. It will be shown that nanoscale face-centered-cubic and body-centered-cubic Ta particles form in the Cu matrix and that these Ta particles are very resistant to coarsening at temperatures up to 900ºC. Nanoindentation studies of these alloys reveal that their strengths are also essentially unaffected by exposure to 900ºC for times up to 100 hours.

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