Microstructures and electrical conductivity of Cu-Ca alloys for high efficiency induction motors
SCIE
SCOPUS
- Title
- Microstructures and electrical conductivity of Cu-Ca alloys for high efficiency induction motors
- Authors
- Sohn, KY; Suh, DW; Lee, SY
- Date Issued
- 2004-01
- Publisher
- Trans Tech Pulication
- Abstract
- The micro structures and electrical conductivity of newly developed Cu-Ca alloys for semi-solid forming have been investigated. High purity calcium was added to molten copper up to 1.4% by weight and mold-cast into a rod. Thermomechanical treatment (TMT) has been carried out to evaluate the variation in electrical conductivity and microstructures of Cu-Ca alloys. The electrical conductivity of copper was reduced linearly with the concentration of calcium by chi(%IACS) = 101 - k(.)C, where k is a constant having the values ranging from 16.7 to 20, depending on the processing condition. The introduction of prestrain significantly reduced the grain size during subsequent heating by recrystallization, influencing the electrical conductivity of Cu-Ca alloys.
- Keywords
- semi-solid forming; Cu-Ca alloy; electrical conductivity; copper rotor; grain refining
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/16272
- DOI
- 10.4028/www.scientific.net/MSF.449-452.685
- ISSN
- 0255-5476
- Article Type
- Article
- Citation
- MATERIALS SCIENCE FORUM, vol. 449-4, page. 685 - 688, 2004-01
- Files in This Item:
- There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.