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Title: ECAE of Hiperco Soft Magnetic Alloy.


Abstract not provided.

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Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
Report Number(s):
DOE Contract Number:
Resource Type:
Resource Relation:
Conference: Proposed for presentation at the Department seminar at Texas A&M Dept. of Materials Science and Engineering held October 17, 2016 in College Station, TX.
Country of Publication:
United States

Citation Formats

Susan, Donald F., Dr. Ibrahim Karaman, and Jozaghi, Taymaz. ECAE of Hiperco Soft Magnetic Alloy.. United States: N. p., 2016. Web.
Susan, Donald F., Dr. Ibrahim Karaman, & Jozaghi, Taymaz. ECAE of Hiperco Soft Magnetic Alloy.. United States.
Susan, Donald F., Dr. Ibrahim Karaman, and Jozaghi, Taymaz. 2016. "ECAE of Hiperco Soft Magnetic Alloy.". United States. doi:.
title = {ECAE of Hiperco Soft Magnetic Alloy.},
author = {Susan, Donald F. and Dr. Ibrahim Karaman and Jozaghi, Taymaz},
abstractNote = {Abstract not provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2016,
month =

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  • Abstract not provided.
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  • The alloy containing 49 percent Co, 49 percent Fe, and 2 percent V, is extremely sensitive to the type of heat treatment carried out after fabrication. Changes in magnetic properties by varying the heat treatment temperature from 450 to 800$sup 0$C are shown. The variation of ac magnetostriction and power loss are discussed in terms of changes in anisotropy, magnetostriction constants, and structure. The material is sensitive also to mechanical stresses. Tension or compression applied parallel to the magnetizing direction produce the largest changes. After final heat treatment at temperatures above 700$sup 0$C, compressive stress increases the power loss whereasmore » tensile strength has little effect. After annealing between 450 and 700$sup 0$C, tensile stress can have a harmful effect and at some flux densities (up to about 1.0T) a ''stress after effect'' is presented as indicated by a gradual change in loss after a stress is removed from a sample. (auth)« less
  • Heavy plastic deformation and controlled recrystallization is effective for producing submicron-grained (SMG) materials capable of superplastic extrusion (SPE) or forging, with lower pressures, higher strains, and more complex shapes than traditional extrusion or forging. Equal channel angular extrusion (ECAE) is an innovative deformation process capable of imparting heavy uniform deformation throughout massive sections which here-to-fore could only be attained in very thin sheet sections and wire. The process can be applied repeatedly (multiple passes) with arbitrary selection of planes and directions of shear, allowing for the control of the total amount of deformation and grain aspect ratio as well asmore » the texture of the deformed billet. For example, after eight passes, the deformation in the billet material is equivalent to a true strain of 9.2 (equivalent area reduction ratio of 10,000:1). In contrast to conventional extrusion processes, the cross-section remains constant from the beginning to the end of ECAE. A submicron-grained (SMG) structure has been produced with ECAE in 3003 aluminum.« less