161 0

Solidification microsegregation and hot ductility of Fe-Mn-C-Al-xNb TWIP steels

Title
Solidification microsegregation and hot ductility of Fe-Mn-C-Al-xNb TWIP steels
Author
김진경
Keywords
PHASE-FIELD SIMULATION; CRACKING SUSCEPTIBILITY; TRIP/TWIP STEELS; ALLOY-STEELS; NB; MICROSTRUCTURE; BEHAVIOR; SEGREGATION; CARBON; ENERGY
Issue Date
2018-11
Publisher
SPRINGER
Citation
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, v. 49A, No. 11, Page. 5509-5523
Abstract
The influence of Nb addition on casting microstructures and high-temperature mechanical properties of Fe-Mn-C-Al-xNb TWIP steels was analyzed by phase-field modeling and experiments. Phase-field simulations showed that Mn, Nb, and C are enriched in inter-dendritic regions while Al is enriched in dendritic regions during solidification process of the investigated TWIP steels. Both phase-field simulations and microstructural characterization show that NbC precipitates are preferentially present near inter-dendritic boundaries. Nb addition slightly reduces hot ductility of the investigated steel at 1173 K (900 degrees C) while the Nb-added TWIP steels show better hot-ductility than the reference steel for deformation temperatures above 1373 K (1100 degrees C). NbC precipitates and inter-dendritic distances appear to be the most important variables that affect hot-ductility behavior of the investigated TWIP steels. (C) The Minerals, Metals & Materials Society and ASM International 2018.
URI
https://link.springer.com/article/10.1007/s11661-018-4893-8https://repository.hanyang.ac.kr/handle/20.500.11754/98831
ISSN
1073-5623; 1543-1940
DOI
10.1007/s11661-018-4893-8
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > MATERIALS SCIENCE AND CHEMICAL ENGINEERING(재료화학공학과) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE