scholarly journals FRACTURE AND TOUGHNESS OF BCC IRON ALLOYS AT CRYOGENIC TEMPERATURE

1978 ◽  
pp. 847-852 ◽  
Author(s):  
K. Ishikawa ◽  
K. Tsuya
Keyword(s):  
Cryogenic Temperature ◽  
Iron Alloys ◽  
Bcc Iron

EFFECT OF LOCAL ON FORMATION OF LOCAL MOMENTS IN BCC IRON ALLOYS

1979 ◽  
Vol 40 (C2) ◽  
pp. C2-204-C2-206 ◽  
Author(s):  
M. Shiga ◽  
Y. Nakamura
Keyword(s):  
Iron Alloys ◽  
Local Moments ◽  
Bcc Iron

Solid-Phase Mechanical Alloying of BCC Iron Alloys by Nitrogen in Ball Mills

2012 ◽  
Vol 330 ◽  
pp. 25-37 ◽  
Author(s):  
V.A. Shabashov ◽  
K.A. Kozlov ◽  
K.A. Lyashkov ◽  
A.V. Litvinov ◽  
G.A. Dorofeev ◽  
...  
Keyword(s):  
Solid Solutions ◽  
Solid Phase ◽  
Iron Alloys ◽  
X Ray Diffraction ◽  
Ball Mills ◽  
X Ray ◽  
Chromium Nitrides ◽  
Bcc Lattice ◽  
Bcc Iron ◽  
The Matrix

The methods of Mössbauer spectroscopy and X-ray diffraction analysis have been used to study the processes of a solid-phase alloying of the iron alloys with a bcc lattice by nitrogen that occur upon ball-mill mechanical activation in the presence of chromium nitrides. It is shown that a deformation-induced dissolution of chromium nitrides in the matrix of pure iron and in that of the alloys Fe–3Al and Fe–6V results in the formation of the substitutional chromium and interstitial nitrogen bcc solid solutions. An additional alloying of iron with aluminum or vanadium under the deformation dissolution of nitrides leads to the escape of aluminum and vanadium from the matrix and to a decrease in the nitrogen content characteristic of the interstitial solid solution proper due to the strong chemical bonding of alloying elements with nitrogen. The subsequent annealing leads to the decomposition of already formed solid solutions with the formation of aluminum, vanadium, and chromium nitrides of extreme dispersion.

Phase Transformation In Ti-6al-4v Alloys

1972 ◽  
Vol 30 ◽  
pp. 584-585
Author(s):  
Shiro Fujishiro
Keyword(s):  
Phase Transformation ◽  
Grain Boundary ◽  
Cryogenic Temperature ◽  
Β Phase ◽  
Heat Treated ◽  
Mixed Microstructure ◽  
Ductile Behavior

The Ti-6 wt.% Al-4 wt.% V commercial alloys have exhibited an improved formability at cryogenic temperature when the alloys were heat-treated prior to the tests. The author was interested in further investigating this unusual ductile behavior which may be associated with the strain-induced transformation or twinning of the a phase, enhanced at lower temperatures. The starting materials, supplied by RMI Co., Niles, Ohio were rolled mill products in the form of 40 mil sheets. The microstructure of the as-received materials contained mainly ellipsoidal α grains measuring between 1 and 5μ. The β phase formed an undefined grain boundary around the a grains. The specimens were homogenized at 1050°C for one hour, followed by aging at 500°C for two hours, and then quenched in water to produce the α/β mixed microstructure.

MÖSSBAUER EFFECT IN RHODIUM IRON ALLOYS

1971 ◽  
Vol 32 (C1) ◽  
pp. C1-863-C1-864 ◽  
Author(s):  
B. WINDOW ◽  
G. LONGWORTH ◽  
C. E. JOHNSON
Keyword(s):  
Mössbauer Effect ◽  
Iron Alloys ◽  
Mossbauer Effect

MAGNETIC INTERACTION IN SELF-REVERSING ANDESITIC PUMICE IN RELATION TO IRON ALLOYS

1988 ◽  
Vol 49 (C8) ◽  
pp. C8-2065-C8-2066
Author(s):  
M. Haag ◽  
F. Heller ◽  
R. Allenspach
Keyword(s):  
Magnetic Interaction ◽  
Iron Alloys
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