Correlation of Fe/Cr phase decomposition process and age-hardening in Fe-15Cr ferritic alloys

被引：18
|
作者：
Chen, Dongsheng [1 ]
Kimura, Akihiko [2 ]
Han, Wentuo [2 ]
机构：
[1] Kyoto Univ, Grad Sch Energy Sci, Kyoto 6110011, Japan
[2] Kyoto Univ, Inst Adv Energy, Kyoto 6110011, Japan
来源：
JOURNAL OF NUCLEAR MATERIALS | 2014年 / 455卷 / 1-3期
关键词：
DISPERSION-STRENGTHENED STEELS; FE;
D O I：
10.1016/j.jnucmat.2014.07.069
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effects of thermal aging on the microstructure and mechanical properties of Fe-15Cr ferritic model alloys were investigated by TEM examinations, micro-hardness measurements and tensile tests. The materials used in this work were Fe-15Cr, Fe-15Cr-C.and Fe-15Cr-X alloys, where X refers to Si, Mn and Ni to simulate a pressure vessel steel. Specimens were isothermally aged at 475 degrees C up to 5000 h. Thermal aging causes a significant increase in the hardness and strength. An almost twice larger hardening is required for embrittlement of Fe-15Cr-X relative to Fe-15Cr. The age-hardening is mainly due to the formation of Cr-rich alpha' precipitates, while the addition of minor elements has a small effect on the saturation level of age-hardening. The correlation of phase decomposition process and age-hardening in Fe-15Cr alloy was interpreted by dispersion strengthened models. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：436 / 439
页数：4
相关论文
共 50 条
  • [31] On the magnetism of the σ-phase Fe-Cr alloys
    Cieslak, J.
    Reissner, M.
    Steiner, W.
    Dubiel, S. M.
    PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 2008, 205 (08): : 1794 - 1799
  • [32] The influence of temperature on σ-phase formation and the resulting hardening of Fe-Cr-Mo-alloys
    Waanders, FB
    Vorster, SW
    Pollak, H
    HYPERFINE INTERACTIONS, 1999, 120 (1-8): : 751 - 755
  • [33] Nanoscale Phase Evolution during Continuum Decomposition of Fe-Cr Alloys
    Li, Yongsheng
    Zhu, Lihui
    Liu, Chengwei
    Shi, Shujing
    MATERIALS, 2017, 10 (12):
  • [34] Effect of external stress on the Fe-Cr phase separation in 15-5 PH and Fe-15Cr-5Ni alloys
    Danoix, F.
    Lacaze, J.
    Gibert, A.
    Mangelinck, D.
    Hoummada, K.
    Andrieu, E.
    ULTRAMICROSCOPY, 2013, 132 : 193 - 198
  • [35] Growth kinetics and abrasive wear resistance of boride layers on Fe-15Cr alloy
    Dybkov, V. I.
    Goncharuk, L. V.
    Khoruzha, V. G.
    Samelyuk, A. V.
    Sidorko, V. R.
    MATERIALS SCIENCE AND TECHNOLOGY, 2011, 27 (10) : 1502 - 1512
  • [36] Twofold age-hardening mechanism of Al-added high-Cr ODS ferritic steels
    Kimura, Akihiko
    Sang, Wei
    Han, Wentuo
    Yabuuchi, Kiyohiro
    Xin, Zongxi
    Luan, Junhua
    Dou, Peng
    JOURNAL OF NUCLEAR MATERIALS, 2023, 575
  • [37] Effects of heat treatments on near surface elemental profiles of Fe-15Cr polycrystalline alloy
    Park, E
    Spiegel, M
    CORROSION ENGINEERING SCIENCE AND TECHNOLOGY, 2005, 40 (03) : 217 - 225
  • [38] Effect of Cr/Al contents on the 475°C age-hardening in oxide dispersion strengthened ferritic steels
    Han, Wentuo
    Yabuuchi, Kiyohiro
    Kimura, Akihiko
    Ukai, Shigeharu
    Oono, Naoko
    Kaito, Takeji
    Torimaru, Tadahiko
    Hayashi, Shigenari
    NUCLEAR MATERIALS AND ENERGY, 2016, 9 : 610 - 615
  • [39] METASTABLE R-PHASE IN Fe-Cr-Mo AND Fe-Cr-W ALLOYS
    HAMAGOCHI Yoshikazu
    KUWANO Hisashi
    Acta Metallurgica Sinica(English Edition), 1991, (03) : 172 - 176
  • [40] Multiscale modeling of precipitation hardening: Application to the Fe-Cr alloys
    Monnet, Ghiath
    ACTA MATERIALIA, 2015, 95 : 302 - 311
12345