Thermomechanical strengthening of rolls for cold rolling

Metallurgist ◽  
1986 ◽  
Vol 30 (8) ◽  
pp. 289-292
Author(s):  
A. F. Pimenov ◽  
V. A. Savinov ◽  
V. V. Kozhukhov ◽  
M. Yu. Laiko ◽  
S. I. Solomennikov
Keyword(s):  
Cold Rolling ◽  
Thermomechanical Strengthening

Microanalytical Identification of a New Zr-Nb-Fe Phase

1990 ◽  
Vol 48 (2) ◽  
pp. 132-133
Author(s):  
O.T. Woo ◽  
G.J.C. Carpenter
Keyword(s):  
Trace Elements ◽  
Cold Rolling ◽  
Proportionality Factor ◽  
Tube Material ◽  
X Ray ◽  
Metal Foils ◽  
Arc Melting ◽  
Intermetallic Particles ◽  
Intermetallic Precipitates ◽  
Cold Worked

To study the influence of trace elements on the corrosion and hydrogen ingress in Zr-2.5 Nb pressure tube material, buttons of this alloy containing up to 0.83 at% Fe were made by arc-melting. The buttons were then annealed at 973 K for three days, furnace cooled, followed by ≈80% cold-rolling. The microstructure of cold-worked Zr-2.5 at% Nb-0.83 at% Fe (Fig. 1) contained both β-Zr and intermetallic precipitates in the α-Zr grains. The particles were 0.1 to 0.7 μm in size, with shapes ranging from spherical to ellipsoidal and often contained faults. β-Zr appeared either roughly spherical or as irregular elongated patches, often extending to several micrometres.The composition of the intermetallic particles seen in Fig. 1 was determined using Van Cappellen’s extrapolation technique for energy dispersive X-ray analysis of thin metal foils. The method was employed to avoid corrections for absorption and fluorescence via the Cliff-Lorimer equation: CA/CB = kAB · IA/IB, where CA and CB are the concentrations by weight of the elements A and B, and IA and IB are the X-ray intensities; kAB is a proportionality factor.

TEM study of amorphization of Cu and Ti foils by cold-rolling

1990 ◽  
Vol 48 (4) ◽  
pp. 146-147
Author(s):  
W. A. Chiou ◽  
N. L. Jeon ◽  
Genbao Xu ◽  
M. Meshii
Keyword(s):  
Solid State ◽  
Cold Rolling ◽  
High Energy ◽  
Rapid Quenching ◽  
Vapor Condensation ◽  
Metallic Alloys ◽  
Solid State Reactions ◽  
High Energy Particle ◽  
Amorphous Metallic Alloys ◽  
Thin Foils

For many years amorphous metallic alloys have been prepared by rapid quenching techniques such as vapor condensation or melt quenching. Recently, solid-state reactions have shown to be an alternative for synthesizing amorphous metallic alloys. While solid-state amorphization by ball milling and high energy particle irradiation have been investigated extensively, the growth of amorphous phase by cold-rolling has been limited. This paper presents a morphological and structural study of amorphization of Cu and Ti foils by rolling.Samples of high purity Cu (99.999%) and Ti (99.99%) foils with a thickness of 0.025 mm were used as starting materials. These thin foils were cut to 5 cm (w) × 10 cm (1), and the surface was cleaned with acetone. A total of twenty alternatively stacked Cu and Ti foils were then rolled. Composite layers following each rolling pass were cleaned with acetone, cut into half and stacked together, and then rolled again.

A TEM microscopical investigation of the magnetic domain structure of a metastable austenitic stainless steel

1994 ◽  
Vol 52 ◽  
pp. 696-697
Author(s):  
G. Fourlaris ◽  
T. Gladman
Keyword(s):  
Tensile Strength ◽  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Cold Rolling ◽  
Solution Treatment ◽  
Magnetic Domain ◽  
High Strength ◽  
Medium Carbon Steel ◽  
Magnetic Characteristics ◽  
Metastable Austenitic Stainless Steel

Stainless steels have widespread applications due to their good corrosion resistance, but for certain types of large naval constructions, other requirements are imposed such as high strength and toughness , and modified magnetic characteristics.The magnetic characteristics of a 302 type metastable austenitic stainless steel has been assessed after various cold rolling treatments designed to increase strength by strain inducement of martensite. A grade 817M40 low alloy medium carbon steel was used as a reference material.The metastable austenitic stainless steel after solution treatment possesses a fully austenitic microstructure. However its tensile strength , in the solution treated condition , is low.Cold rolling results in the strain induced transformation to α’- martensite in austenitic matrix and enhances the tensile strength. However , α’-martensite is ferromagnetic , and its introduction to an otherwise fully paramagnetic matrix alters the magnetic response of the material. An example of the mixed martensitic-retained austenitic microstructure obtained after the cold rolling experiment is provided in the SEM micrograph of Figure 1.

Effect of solute carbon present during cold rolling and annealing on the magnetic properties of electrical steels

1998 ◽  
Vol 08 (PR2) ◽  
pp. Pr2-483-Pr2-486 ◽  
Author(s):  
K. Eloot ◽  
J. Penning ◽  
J. Dilewijns
Keyword(s):  
Magnetic Properties ◽  
Cold Rolling ◽  
Electrical Steels ◽  
Cold Rolling And Annealing ◽  
Solute Carbon

Modelling of the microscopic strain heterogeneity during cold rolling of steel sheets. Prediction of the deformation texture

1999 ◽  
Vol 09 (PR9) ◽  
pp. Pr9-43-Pr9-52 ◽  
Author(s):  
L. Delannay ◽  
P. van Houtte ◽  
I. Samajdar
Keyword(s):  
Cold Rolling ◽  
Deformation Texture ◽  
Steel Sheets

The spatial oscillation of velocity fields in the roll bite of strip cold rolling by the upper bound approach

2012 ◽  
Vol 109 (2) ◽  
pp. 73-80
Author(s):  
Q.-T. Ngo ◽  
A. Ehrlacher ◽  
N. Legrand
Keyword(s):  
Cold Rolling ◽  
Upper Bound ◽  
Velocity Fields ◽  
Spatial Oscillation ◽  
Roll Bite

Behavior of Goss, {411}, and {111} Oriented Grains During Recrystallization and Decarburization After Cold-rolling of Fe-3.1% GrainOriented Electrical Steel

2016 ◽  
Vol 54 (7) ◽  
pp. 540-545 ◽  
Author(s):  
No-Jin Park ◽  
Sung-Ji Choi ◽  
Hyung-Don Joo ◽  
Jong-Tae Park
Keyword(s):  
Cold Rolling ◽  
Electrical Steel

Analytical and Numerical Model of a Cold Rolling Process

2017 ◽  
Author(s):  
João Batista de Aguiar
Keyword(s):  
Numerical Model ◽  
Cold Rolling ◽  
Rolling Process
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