Formation of ferrite with Cr equivalents and solidification rates in Mod. (9-12)Cr-1Mo steels

被引：1
|
作者：
Kim, Y. H. [1 ]
Kim, H. C. [1 ]
Jung, Y. G. [1 ]
Lee, J. H. [1 ]
Chi, B. H. [2 ]
Ryu, S. H. [2 ]
机构：
[1] Changwon Natl Univ, Dept Mat Sci & Engn, Chang Won, South Korea
[2] Doosan Heavy Ind Co, R&D Ctr, Chang Won, South Korea
来源：
ADVANCES IN NANOMATERIALS AND PROCESSING, PTS 1 AND 2 | 2007年 / 124-126卷
关键词：
Mod.12Cr-1Mo steel; directional solidification; ferrite; segregation;
D O I：
10.4028/www.scientific.net/SSP.124-126.1497
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The influence of solidification rates and Cr equivalents on the formation of the ferrite was studied by directional solidification in mod. (9-12)Cr-1Mo steels. It was found that the volume fraction of ferrite increased as increasing Cr equivalent and solidification rate. The volume fraction of the ferrite showed much higher at low solidification rates with the planar or cellular interface than that at high solidification rates with the dendritic interface. The volume fraction of ferrite in solidification microstructure showed much higher than that in extruded and heat-treated alloys. It depends on not only solidification rate and Cr equivalent but also the solidification fraction. At low solidification rates, there occurs segregation because the solid/liquid interface was planar or cellular, and it makes composition change with solidification fractions. The formation of ferrite has been discussed with Cr equivalent and solidification rate.
引用
收藏
页码：1497 / +
页数：2
相关论文
共 50 条
  • [1] Formation of boride eutectic with addition of boron in Mod. 12Cr-1Mo steels
    Choi, G. S.
    Kim, Y. H.
    Kang, S. S.
    Jung, Y. G.
    Lee, J. H.
    Rye, S. H.
    ECO-MATERIALS PROCESSING AND DESIGN VIII, 2007, 544-545 : 331 - +
  • [2] Temporal Brittleness of the Mod. 9Cr-1Mo Steel
    Hur, Sung Kang
    Gu, Ji Ho
    Shin, Keesam
    He, Yincheng
    Shin, Jong Ho
    KOREAN JOURNAL OF MATERIALS RESEARCH, 2011, 21 (11): : 592 - 595
  • [3] Formation Behavior of δ Ferrite Within LB and GTA Weld Zones of Mod. 9Cr-1Mo Steel in Terms of Thermal History
    Jung, Nam-hun
    Ahn, Jang-ho
    Lee, Myung-jin
    Kang, Nam-hyun
    Cho, Kyung-Mox
    KOREAN JOURNAL OF METALS AND MATERIALS, 2018, 56 (02): : 93 - 102
  • [4] Delta () Ferrite Formation in the Welds of Aluminized 9Cr-1Mo Steels
    Zala, A. B.
    Jamnapara, N. I.
    Badheka, V. J.
    Sasmal, C.
    Sam, S.
    Ranjan, M.
    METALLOGRAPHY MICROSTRUCTURE AND ANALYSIS, 2019, 8 (02) : 256 - 262
  • [5] Delta (δ) Ferrite Formation in the Welds of Aluminized 9Cr-1Mo Steels
    A. B. Zala
    N. I. Jamnapara
    V. J. Badheka
    C. Sasmal
    S. Sam
    M. Ranjan
    Metallography, Microstructure, and Analysis, 2019, 8 : 256 - 262
  • [6] Microstructural stability of 9-12%Cr ferrite/martensite heat-resistant steels
    Yan, Wei
    Wang, Wei
    Shan, Yi-Yin
    Yang, Ke
    FRONTIERS OF MATERIALS SCIENCE, 2013, 7 (01) : 1 - 27
  • [7] Creep-fatigue evaluation of Mod. 9Cr-1Mo (NT) steel
    Power Reactor & Nuclear Fuel, Development Corp, Ibaraki, Japan
    Zairyo, 496 (23-28):
  • [8] Properties of weldments and aged 9-12 Cr steels
    Artinger, I
    MICROSTRUCTURAL STABILITY OF CREEP RESISTANT ALLOYS FOR HIGH TEMPERATURE PLANT APPLICATIONS, 1998, (02): : 361 - 369
  • [9] Creep damage evaluation for HAZ of Mod. 9Cr-1Mo steels under multi-axial stress conditions
    Yoshida, Kimiaki
    Yatomi, Masataka
    11TH INTERNATIONAL CONFERENCE ON THE MECHANICAL BEHAVIOR OF MATERIALS (ICM11), 2011, 10
  • [10] Modification in the Microstructure of Mod. 9Cr-1Mo Ferritic Martensitic Steel Exposed to Sodium
    Prasanthi, T. N.
    Sudha, Cheruvathur
    Paul, V. Thomas
    Bharasi, N. Sivai
    Saroja, S.
    Vijayalakshmi, M.
    METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2014, 45A (10): : 4220 - 4234
12345