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2016 Vol.26, Issue 10 Preview Page
Effect of Micro-Alloying Elements on Recrystallization Behavior of Carbon Steels at Different Strain Rates

변형률 속도에 따른 탄소강의 재결정 거동에 미치는 미량 합금 원소의 영향

Sang-In Lee
,
Hyeon-Seok Lim
,
Byoungchul Hwang†
이 상인
,
임 현석
,
황 병철†
Department of Materials Science and Engineering Seoul National University of Science and Technology, Seoul 01811, Republic of Korea
서울과학기술대학교 신소재공학과
†Corresponding author : bhwang@seoultech.ac.kr (B. Hwang, Seoul Nat’l Univ. Sci. and Technol.)
October 2016. pp. 535-541
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Abstract

The present study deals with the effects of micro-alloying elements such as Ni, V, and Ti on the recrystallization behavior of carbon steels at different strain rates. Eight steel specimens were fabricated by varying the chemical composition and reheating temperature; then, a high-temperature compressive deformation test was conducted in order to investigate the relationship of the microstructure and the recrystallization behavior. The specimens containing micro-alloying elements had smaller prior austenite grain sizes than those of the other specimens, presumably due to the pinning effect of the formation of carbonitrides and AlN precipitates at the austenite grain boundaries. The high-temperature compressive deformation test results indicate that dynamic recrystallization behavior was suppressed in the specimens with micro-alloying elements, particularly at increased strain rate, because of the pinning effect of precipitates, grain boundary dragging and lattice misfit effects of solute atoms, although the strength increased with increasing strain rate.

Keywords
recrystallization behavior
micro-alloying elements
steels
strain rate
reheating temperature
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Information
  • Publisher :Materials Research Society of Korea
  • Publisher(Ko) :한국재료학회
  • Journal Title :Korean Journal of Materials Research
  • Journal Title(Ko) :한국재료학회지
  • Volume : 26
  • No :10
  • Pages :535-541
  • Received Date : 2016-07-07
  • Revised Date : 2016-08-31
  • Accepted Date : 2016-08-31
  • DOI :https://doi.org/10.3740/MRSK.2016.26.10.535
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