Special features of structurization in powdered iron-manganese alloys in deformation and recrystallization. I. Formation of the deformation structure in hot extrusion

1992 ◽  
Vol 31 (5) ◽  
pp. 395-402 ◽  
Author(s):  
T. F. Volynova ◽  
I. Z. Emel'yanova ◽  
I. B. Sidorova
Keyword(s):  
Hot Extrusion ◽  
Deformation Structure ◽  
Powdered Iron ◽  
Manganese Alloys ◽  
Iron Manganese

Solid Solution Effects and Deformation Micros trueture of Shock-Loaded Iron Manganese Alloys

1970 ◽  
Vol 28 ◽  
pp. 420-421
Author(s):  
A. Christou ◽  
J. V. Foltz ◽  
N. Brown
Keyword(s):  
Solid Solution ◽  
Shock Loading ◽  
High Strain ◽  
Local Stress ◽  
Strain Rates ◽  
Local Stress Concentration ◽  
Bcc Metals ◽  
Manganese Alloys ◽  
Iron Manganese ◽  
Transmission Microscope

In general, all BCC transition metals have been observed to twin under appropriate conditions. At the present time various experimental reports of solid solution effects on BCC metals have been made. Indications are that solid solution effects are important in the formation of twins. The formation of twins in metals and alloys may be explained in terms of dislocation mechanisms. It has been suggested that twins are nucleated by the achievement of local stress-concentration of the order of 15 to 45 times the applied stress. Prietner and Leslie have found that twins in BCC metals are nucleated at intersections of (110) and (112) or (112) and (112) type of planes.In this paper, observations are reported of a transmission microscope study of the iron manganese series under conditions in which twins both were and were not formed. High strain rates produced by shock loading provided the appropriate deformation conditions. The workhardening mechanisms of one alloy (Fe - 7.37 wt% Mn) were studied in detail.

Environmental effects in iron-manganese alloys

1978 ◽  
Vol 25 (8) ◽  
pp. 597-600 ◽  
Author(s):  
P. Radhakrishna ◽  
F. Livet
Keyword(s):  
Environmental Effects ◽  
Manganese Alloys ◽  
Iron Manganese

Mechanical properties of iron-manganese alloys of high and commercial purities

1985 ◽  
Vol 17 (6) ◽  
pp. 791-798
Author(s):  
T. F. Volynova ◽  
V. M. Mnasin ◽  
I. B. Sidorova
Keyword(s):  
Mechanical Properties ◽  
Manganese Alloys ◽  
Iron Manganese

Influence of ECAP Routes on the Microstructure and Mechanical Properties of Hot Extruded 3003 Al Alloy

2007 ◽  
Vol 124-126 ◽  
pp. 1397-1400 ◽  
Author(s):  
Byoung Soo Lee ◽  
Hoon Cho
Keyword(s):  
Mechanical Properties ◽  
Grain Refinement ◽  
Hot Extrusion ◽  
High Strength ◽  
Al Alloy ◽  
Deformation Structure ◽  
Ecap Processing ◽  
Fine Grained ◽  
Strain Process ◽  
Equiaxed Grains

The microstructures and mechanical properties of unidirectional deformation structured Al alloy during ECAP with various deformation routes were investigated. In order to fabricate unidirectional deformation structure for Al alloy, hot extrusion was carried out. It was found that the deformation route A in ECAP routes is the dominant route for the grain refinement and strengthening. In deformation route A, the high strength ultra-fine grained Al alloy with a grain size of ~ 200 nm was obtained due to the accumulation of consecutive strain process. In contrast, the strength of ECAP’ed Al alloy produced via deformation route C was greatly increased after one pass because the grains were strained and cancelled each pass. By contrast, the equiaxed grains were obtained in deformation route BC because the sample was rotated 90 O in the same sense in each pass. The deformation route BC was superior to the deformation route C because the deformation route BC was more favorable than the deformation route C in the accumulation of consecutive strain. It is also found that unidirectional deformation structured Al alloy via hot extrusion shows similar grain refinement tendency with equiaxed structured Al alloy during ECAP processing.

A Mössbauer spectroscopic study of sulphidation of iron-manganese alloys

1981 ◽  
Vol 21 (9-10) ◽  
pp. 627-637 ◽  
Author(s):  
K. Nishida ◽  
T. Tani ◽  
T. Narita ◽  
H. Ohashi
Keyword(s):  
Spectroscopic Study ◽  
Manganese Alloys ◽  
Iron Manganese
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