Effect of precipitation on hot formability of high nitrogen steels

ERİŞİR, ERSOY; Prahl, U.; Bleck, W.

doi:10.1016/j.msea.2010.09.045

Effect of precipitation on hot formability of high nitrogen steels

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, cilt.528, sa.1, ss.519-525, 2010 (SCI-Expanded)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 528 Sayı: 1
Basım Tarihi: 2010
Doi Numarası: 10.1016/j.msea.2010.09.045
Dergi Adı: MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Sayfa Sayıları: ss.519-525
Anahtar Kelimeler: High nitrogen steels, Precipitation, Forging, Crack initiation, Hot formability
Kocaeli Üniversitesi Adresli: Evet

Özet

This paper examines the effect of precipitation on hot formability of high nitrogen steels (HNSs) through modeling of the precipitation and experimental simulation of the hot deformation. The experiments were carried out on three grades 1.4501, 1.4882, 1.4452 of HNSs and austenitic grade 1.4301 steel. In the course of modeling, precipitation characteristics and phase transformations were investigated by calculation of phase diagrams and precipitation analysis using SEM/EDX. High temperature properties were determined at deformation temperatures between 900 degrees C and 1300 degrees C using hot tensile tests in order to investigate the hot formability. The effect of deformation temperature on crack sensibility was determined using compression test. The effects of carbide/nitride precipitation on hot formability in HNSs were discussed. (C) 2010 Elsevier B.V. All rights reserved.