Effect of Cooling Rate on Solidification and Segregation Characteristics of 904L Super Austenitic Stainless Steel

Yunong Li; Dening Zou; Wanwan Chen; Yingbo Zhang; Wei Zhang; Fanghong Xu

doi:10.1007/s12540-021-01091-7

추천

검색

자료유형: 학술저널

저자정보: Yunong Li (Xi’an University of Architecture and Technology) Dening Zou (Xi’an University of Architecture and Technology) Wanwan Chen (Xi’an University of Architecture and Technology) Yingbo Zhang (Xi’an University of Architecture and Technology) Wei Zhang (Shanxi Taigang Stainless Steel Co. Ltd) Fanghong Xu (Shanxi Taigang Stainless Steel Co. Ltd)

저널정보: 대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.28 No.8

발행연도: 2022.8

수록면: 1,907 - 1,918 (12page)

DOI: 10.1007/s12540-021-01091-7

이용수

📌

연구주제

📖

연구배경

🔬

연구방법

🏆

연구결과

초록· 키워드

오류제보하기

To study and understand the solidification behavior of super austenitic stainless steel under different cooling rates and segregationlaws of alloying elements is of great significance to optimize the subsequent diffusion annealing homogenizationtreatment process and improve product quality. According to Thermo-Calc thermodynamic simulation results and combinedwith high temperature laser confocal scanning electron microscope (HT-CSLM), the tissue morphology of 904L superaustenitic stainless steel was observed in-situ during solidification. The solidification path of the test steel was determinedvia calculation with the Scheil-Gulliver model. Microscopy techniques, including true color microscopy, scanning electronmicroscopy (SEM), energy dispersive spectrometer (EDS), and electron probe microanalyzer (EPMA) were used to analyzethe influence of different cooling rates (6 ℃/min, 50 ℃/min, and 100 ℃/min) on the solidification structure and determine themain distribution law of alloying elements. This analysis determined that the solute distribution coefficient (K) of Cr, Mn,Mo, Cu, and Si elements is less than 1 during the solidification process, which means that they will accumulate in the liquidphase. Among them, elemental Mo segregation is the most severe, while elemental Ni hardly segregates. As the cooling rateincreases, the crystallization temperature of the test steel decreases, and the secondary dendrite arm spacing λ2 decreases,the concentration of Mo in the residual liquid phase increases.

#Cooling rate · Super austenitic stainless steel · Solidification segregation · HT-CSLM

참고문헌 (0)

참고문헌 신청

참고문헌이 DBpia에서 서비스 중이라면, [참고문헌 신청]을 통해 등록해보세요

함께 읽어보면 좋을 논문

논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!