Influence of Heat Treatment on Stainless Steel 316L Alloy Manufactured by Hybrid Additive Manufacturing Using Powder Bed Fusion and Directed Energy Deposition

Jungkyun Na; Semin Park; Hyun‑seok Ko; Hyung‑don Joo; Yangmo Koo

doi:10.1007/s12540-022-01266-w

추천

검색

자료유형: 학술저널

저자정보: Jungkyun Na (Pohang University of Science and Technology (POSTECH)) Semin Park (POSCO) Hyun‑seok Ko (POSCO) Hyung‑don Joo (POSCO) Yangmo Koo (Pohang University of Science and Technology (POSTECH))

저널정보: 대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.29 No.3

발행연도: 2023.3

수록면: 821 - 832 (12page)

DOI: 10.1007/s12540-022-01266-w

이용수

📌

연구주제

📖

연구배경

🔬

연구방법

🏆

연구결과

초록· 키워드

오류제보하기

Recent interest in sustainable development increased demand for efficient transformer to reduce energy consumption. In orderto meet the high demand for efficient transformer, inefficient batch annealing manufacture for grain-oriented silicon steel,which is core material of transformer, should be improved. Therefore, novel process for achieving about 90% columnar Gossgrains without an inhibitor in continuous line, which differs from the conventional batch process, is herein described. Fe-2.0%Si–C alloys were cold rolled and subsequently partially decarburized in a wet hydrogen gas and these steps are repeatedseveral times. In this process, the sheet is divided into surface layer (α ferrite) and interior (pearlite-like structure + α ferrite).When two-layer sheet is cold rolled, {111} < 112 > is formed by concentrated shear strain and it is developed into Goss seed.During decarburization, Goss grains within surface layer grow inward as columnar grain, retaining the Goss texture of about90%. Concentrated shear strain on surface layer was formed by large difference of strength between the surface and interior.By this difference, large stored energy difference between Goss and {111} < 112 > , {411} < 148 > is acquired, and this leadto the growth of Goss grains. Driving force for forming the Goss grains is concentrated shear strain on the surface layer. Ithas been verified that this novel process has a vast potential for making grain-oriented silicon steel by continuous process.

#Goss · Grain-oriented electrical steel · Shear strain · Columnar grain growth · Inhibitor-free

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!