Nitride precipitation in salt-bath nitrided interstitial-free steel

被引:9
|
作者
Lee, Tae-Ho [1 ]
Oh, Chang-Seok [1 ]
Lee, Min-Ku [2 ]
Han, Sang-Won [2 ]
机构
[1] Korea Inst Mat Sci, Ferrous Alloys Grp, Chang Won 641831, South Korea
[2] ILJIN Light Met Co Ltd, Hwasung 445963, Kyunggi, South Korea
关键词
Nitriding; Precipitation; Transmission electron microscopy; Microstrain; Neutron diffraction; X-RAY; DEFORMATION; NITROGEN; FERRITE; STRAIN;
D O I
10.1016/j.matchar.2010.06.011
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Nitride precipitation and its effect on microstrain in salt-bath nitrided interstitial-free steel were investigated using transmission electron microscopy and neutron diffraction As the cooling rate after nitriding decreased, two nitrides, gamma'-Fe(4)N and alpha"-Fe(16)N(2), were identified in diffusion zone Combined analyses using Rietveld whole-profile fitting and size-strain analysis revealed that the microstrain in the nitrided specimen increased due to nitrogen supersaturation and then decreased after nitride precipitation, whereas the effective particle size continuously decreased It was found that microstrain is the dominant factor in peak broadening of the nitrided specimen (C) 2010 Elsevier Inc All rights reserved
引用
收藏
页码:975 / 981
页数:7
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