Degradation of TNT, RDX, and TATP using Microscale Mechanically Alloyed Bimetals

2009 ◽  
pp. 117-134 ◽  
Author(s):  
Rebecca Fidler ◽  
Tamra Legron ◽  
Kathleen Carvalho-Knighton ◽  
Cherie L. Geiger ◽  
Michael E. Sigman ◽  
...  
Keyword(s):  
Mechanically Alloyed

Fine Microstructure of a Mechanically Alloyed Oxide Dispersion Strengthened Nickel-Base Superalloy

1977 ◽  
Vol 35 ◽  
pp. 298-299
Author(s):  
Jordi Marti ◽  
Timothy E. Howson ◽  
David Kratz ◽  
John K. Tien
Keyword(s):  
Solid Solution ◽  
Volume Fraction ◽  
Stress Rupture ◽  
Oxide Dispersion Strengthened ◽  
Solid Solution Alloy ◽  
Oxide Dispersion ◽  
Creep And Stress Rupture ◽  
Mechanically Alloyed ◽  
Fine Microstructure ◽  
Nickel Base

The previous paper briefly described the fine microstructure of a mechanically alloyed oxide dispersion strengthened nickel-base solid solution. This note examines the fine microstructure of another mechanically alloyed system. This alloy differs from the one described previously in that it is more generously endowed with coherent precipitate γ forming elements A1 and Ti and it contains a higher volume fraction of the finely dispersed Y2O3 oxide. An interesting question to answer in the comparative study of the creep and stress rupture of these two ODS systems is the role of the precipitate γ' in the mechanisms of creep and stress rupture in alloys already containing oxide dispersoids.The nominal chemical composition of this alloy is Ni - 20%Cr - 2.5%Ti - 1.5% A1 - 1.3%Y203 by weight. The system receives a three stage heat treatment-- the first designed to produce a coarse grain structure similar to the solid solution alloy but with a smaller grain aspect ratio of about ten.

Microstructure of mechanically alloyed and hot-pressed Al5CuZr2

1990 ◽  
Vol 48 (4) ◽  
pp. 970-971
Author(s):  
T. E. Mitchell ◽  
P. B. Desch ◽  
R. B. Schwarz
Keyword(s):  
Mechanical Alloying ◽  
Vickers Hardness ◽  
Hot Pressing ◽  
Rapid Quenching ◽  
Hardened Steel ◽  
Alloyed Powder ◽  
Ion Milling ◽  
Mechanical Grinding ◽  
Mechanically Alloyed ◽  
Steel Container

Al3Zr has the highest melting temperature (1580°C) among the tri-aluminide intermetal1ics. When prepared by casting, Al3Zr forms in the tetragonal DO23 structure but by rapid quenching or by mechanical alloying (MA) it can also be prepared in the metastable cubic L12 structure. The L12 structure can be stabilized to at least 1300°C by the addition of copper and other elements. We report a TEM study of the microstructure of bulk Al5CuZr2 prepared by hot pressing mechanically alloyed powder.MA was performed in a Spex 800 mixer using a hardened steel container and balls and adding hexane as a surfactant. Between 1.4 and 2.4 wt.% of the hexane decomposed during MA and was incorporated into the alloy. The mechanically alloyed powders were degassed in vacuum at 900°C. They were compacted in a ram press at 900°C into fully dense samples having Vickers hardness of 1025. TEM specimens were prepared by mechanical grinding followed by ion milling at 120 K. TEM was performed on a Philips CM30 at 300kV.

Structural Studies of Mechanically Alloyed Fe1–xAlx Powder

2020 ◽  
Vol 12 (4) ◽  
pp. 04012-1-04012-5
Author(s):  
S. Khan ◽  
◽  
A. Vyas ◽  
S. Rajan ◽  
S. Jani ◽  
...  
Keyword(s):  
Structural Studies ◽  
Mechanically Alloyed

Microstructure, Magnetic and Mössbauer Studies of Mechanically Alloyed FeCoNi Nanocrystalline Powders

2021 ◽  
Author(s):  
Rakia Daly ◽  
Nawel Khitouni ◽  
Maria Luisa Escoda ◽  
Núria LIorca Isern ◽  
Sunol Martinez Juan Jose ◽  
...  
Keyword(s):  
Nanocrystalline Powders ◽  
Mechanically Alloyed ◽  
Mössbauer Studies

scholarly journals Structural stability of mechanically alloyed amorphous (FeCoNi)70Ti10B20 under high-temperature and high-pressure

2021 ◽  
Vol 860 ◽  
pp. 158528
Author(s):  
Baris Avar ◽  
Tuncay Simsek ◽  
Sadan Ozcan ◽  
Arun K. Chattopadhyay ◽  
Bora Kalkan
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Structural Stability ◽  
Mechanically Alloyed
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