Tensile ductility and necking in consolidated amorphous alumina

2021 ◽  
Author(s):  
Yanming Zhang ◽  
Haidong Liu ◽  
Siddharth Sundararaman ◽  
Liping Huang ◽  
Yunfeng Shi
Keyword(s):  
Tensile Ductility ◽  
Amorphous Alumina

A MAS NMR STUDY OF THE STRUCTURE OF AMORPHOUS ALUMINA FILMS

1985 ◽  
Vol 46 (C8) ◽  
pp. C8-113-C8-117 ◽  
Author(s):  
R. Dupree ◽  
I. Farnan ◽  
A. J. Forty ◽  
S. El-Mashri ◽  
L. Bottyan
Keyword(s):  
Mas Nmr ◽  
Alumina Films ◽  
Nmr Study ◽  
Amorphous Alumina

AL TECH POTOMAC A

Alloy Digest ◽  
1987 ◽  
Vol 36 (7) ◽  
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
High Temperature ◽  
Tensile Ductility ◽  
Heat Treating ◽  
Fatigue Properties ◽  
Die Steel ◽  
Transverse Tensile ◽  
Temperature Performance ◽  
Specialty Steel

Abstract AL TECH POTOMAC A has well-balanced strength and toughness which make it especially suitable for a wide variety of hot-die steel applications, including those involving severe coolants. Its outstanding mechanical properties make it useful for many non-tooling requirements such as aerospace components. For more specialized needs, the manufacturer offers special melting processes that enhance this steel's fatigue properties and transverse tensile ductility. This datasheet provides information on composition, physical properties, microstructure, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on high temperature performance as well as forming, heat treating, and machining. Filing Code: TS-478. Producer or source: AL Tech Specialty Steel Corporation.

Influence of hydrothermal conditions on the phase transformations of amorphous alumina

2021 ◽  
Vol 31 (3) ◽  
pp. 385-387
Author(s):  
Aliya N. Mukhamed’yarova ◽  
Svetlana R. Egorova ◽  
Oksana V. Nosova ◽  
Alexander A. Lamberov
Keyword(s):  
Phase Transformations ◽  
Hydrothermal Conditions ◽  
Amorphous Alumina

Preparation and Phase Changes of Amorphous Alumina

1972 ◽  
Vol 31 (2) ◽  
pp. 57-60 ◽  
Author(s):  
S. G. Samdani ◽  
J. Laxminarasimhaiah ◽  
Abde Ali
Keyword(s):  
Phase Changes ◽  
Amorphous Alumina

Origin of Extended Tensile Ductility of a Fe-28Mn-10Al-1C Steel

2009 ◽  
Vol 40 (7) ◽  
pp. 1520-1523 ◽  
Author(s):  
J.D. Yoo ◽  
S.W. Hwang ◽  
K.-T. Park
Keyword(s):  
Tensile Ductility

Absolute radiation tolerance of amorphous alumina coatings at room temperature

2021 ◽  
Author(s):  
A. Zaborowska ◽  
Ł. Kurpaska ◽  
M. Clozel ◽  
E.J. Olivier ◽  
J.H. O'Connell ◽  
...  
Keyword(s):  
Room Temperature ◽  
Radiation Tolerance ◽  
Alumina Coatings ◽  
Amorphous Alumina

scholarly journals AlO6 clusters’ electric storage effect in amorphous alumina supercapacitors

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Mikio Fukuhara ◽  
Tomoyuki Kuroda ◽  
Fumihiko Hasegawa ◽  
Toshiyuki Hashida ◽  
Mitsuhiro Takeda ◽  
...  
Keyword(s):  
Electron Beam ◽  
Coulomb Blockade ◽  
Density Functional ◽  
Electron Beam Irradiation ◽  
Oxide Surface ◽  
Storage Effect ◽  
Beam Irradiation ◽  
Original Length ◽  
Ragone Plot ◽  
Amorphous Alumina

AbstractIn this study, the electric storage effect of AlO6 clusters in amorphous alumina (AAO) supercapacitors was investigated in terms of cluster morphologies under electron-beam irradiation. Based on first-principles density functional calculation, the optimised structure of AlO6 clusters around an O-vacancy is characterised by a large vacant space created by the absence of an O atom and its neighbouring Al atom. The localised electrons present near the two-atomic vacancies induce positive charges on the inside of the insulating oxide surface, ensuring the adsorption of many electrons on the surface. Electron-beam irradiation (adsorption) from 100 to 180 keV causes the lengths of the Al–O bonds of the cluster to shrink, but then return to the original length with decreasing voltage energy, indicating a rocking-chair-type charge-breathing effect accompanied by a volume expansion of approximately 4%. The I–V and I–R characteristics depicted Coulomb blockade for the switching effect of both the negative and positive potentials. The Ragone plot of the AAO supercapacitor is located at capability area of the second cell.

The Dependence of Tensile Ductility on Investment Casting Parameters in Gamma Titanium Aluminides

1998 ◽  
Vol 552 ◽  
Author(s):  
R. Raban ◽  
L. L. ◽  
T. M.
Keyword(s):  
Titanium Aluminide ◽  
Titanium Aluminides ◽  
Tensile Ductility ◽  
Gamma Titanium Aluminide ◽  
Cooling Rates ◽  
Gamma Titanium ◽  
Investment Cast ◽  
Thermal Data ◽  
Titanium Aluminide Alloys ◽  
Simulation Package

ABSTRACTPlates of three gamma titanium aluminide alloys have been investment cast with a wide variety of casting conditions designed to influence cooling rates. These alloys include Ti-48Al-2Cr-2Nb, Ti- 47Al-2Cr-2Nb+0.5at%B and Ti-45Al-2Cr-2Nb+0.9at%B. Cooling rates have been estimated with the use of thermal data from casting experiments, along with the UES ProCAST simulation package. Variations in cooling rate significantly influenced the microstructure and tensile properties of all three alloys.

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