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이속압연에 의해 가공된 Cu-Ni-Si 합금의 미세 조직 및 기계적 성질

Microstructure and Mechanical Properties of Cu-Ni-Si Alloy Deformed by Differential Speed Rolling

  • 이성희 (국립목포대학교 신소재공학과) ;
  • 한승전 (재료연구소 실용화연구단)
  • Lee, Seong-Hee (Department of Advanced Materials Science and Engineering, Mokpo National University) ;
  • Han, Seung Zeon (Commercialization Research Division, Korea Institute of Materials Science)
  • 투고 : 2015.10.12
  • 심사 : 2015.12.11
  • 발행 : 2016.01.27

초록

Effects of conventional rolling(CR) and differential speed rolling(DSR) on the microstructure and mechanical properties of Cu-Ni-Si alloy were investigated in detail. The copper alloy with thickness of 3 mm was rolled to 50 % reduction at ambient temperature without lubricant with a differential speed ratio of 2:1. The conventional rolling in which the rolling speed of upper and lower rolls is identical was performed under identical rolling conditions. The shear strain introduced by the CR showed positive values at positions of upper roll side and negative values at positions of lower roll side. However, it showed zero or positive values at all positions for the samples rolled by the DSR. The microstrucure and texture development of the as-rolled copper alloy did not show any significant difference between CR and DSR. The tensile strength of the DSR processed specimen was larger than that of the CR processed specimen. The effects of rolling methods on the microstructure and mechanical properties of the as-rolled copper alloy are discussed in terms of the shear strain.

키워드

참고문헌

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피인용 문헌

  1. Continuous Differential Speed Rolling for Grain Refinement of Metals: Processing, Microstructure, and Properties pp.1547-6561, 2019, https://doi.org/10.1080/10408436.2018.1525528