Effect of prior austenite grain size on isothermal bainite transformation in 65Cr steel

被引：8
|
作者：
Sun, Junjie [1 ]
Wang, Yingjun [1 ]
Guo, Shengwu [1 ]
Liu, Yongning [1 ]
机构：
[1] Xi An Jiao Tong Univ, Sch Mat Sci & Engn, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China
来源：
MATERIALS LETTERS | 2020年 / 266卷 / 266期
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
Steel; Ultrafine grain; Phase transformation; Microstructure; Upper bainite; Lower bainite; KINETICS;
D O I：
10.1016/j.matlet.2020.127495
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Isothermal bainite transformation was conducted on both ultrafine-grained (UFG) and normal-grained (NG) 65Cr steels. Both bainite morphology and transformation rate are greatly influenced by prior austenite grain size. Bainite transformation rate is greatly retarded in the UFG steel with average grain size of 4.6m. Lower bainite was obtained for both UFG and NG steels when austempered at 250LC and 300C; however, the bainite morphology changed from lower to upper banite for UFG steel when austempered at 400C, and lower bainite was still obtained in NG steel. This phenomenon is caused by austenite yield strength increase due to grain refinement. (C) 2020 Elsevier B.V. All rights reserved.
引用
收藏
页数：4
相关论文
共 50 条
  • [31] A procedure for indirect and automatic measurement of prior austenite grain size in bainite/martensite microstructures
    L. Morales-Rivas
    V. A. Yardley
    C. Capdevila
    C. Garcia-Mateo
    H. Roelofs
    F. G. Caballero
    Journal of Materials Science, 2015, 50 : 258 - 267
  • [32] A procedure for indirect and automatic measurement of prior austenite grain size in bainite/martensite microstructures
    Morales-Rivas, L.
    Yardley, V. A.
    Capdevila, C.
    Garcia-Mateo, C.
    Roelofs, H.
    Caballero, F. G.
    JOURNAL OF MATERIALS SCIENCE, 2015, 50 (01) : 258 - 267
  • [33] EFFECTS OF THE AUSTENITE GRAIN-SIZE AND DEFORMATION IN THE UNRECRYSTALLIZED AUSTENITE REGION ON BAINITE TRANSFORMATION BEHAVIOR AND MICROSTRUCTURE
    YAMAMOTO, S
    YOKOYAMA, H
    YAMADA, K
    NIIKURA, M
    ISIJ INTERNATIONAL, 1995, 35 (08) : 1020 - 1026
  • [34] EFFECT OF AUSTENITE GRAIN SIZE AND TEMPERATURE ON RATE OF BAINITE FORMATION - REPLY
    BARFORD, J
    OWEN, WS
    JOURNAL OF THE IRON AND STEEL INSTITUTE, 1962, 200 (JAN): : 49 - &
  • [35] Effect of austenite grain size on strain enhanced transformation in a low carbon steel
    Yang, Wangyue
    Hu, Anmin
    Sun, Zuqing
    Jinshu Xuebao/Acta Metallurgica Sinica, 2000, 36 (10): : 1055 - 1060
  • [36] The Effect of Loading during Martensitic Transformation of a Maraging Steel after Prior Austenite Grain Size Refinement by Thermal Cycling
    Petersmann, M.
    Antretter, T.
    Sannikov, A.
    Sartory, B.
    Ehlenbroeker, U.
    PRAKTISCHE METALLOGRAPHIE-PRACTICAL METALLOGRAPHY, 2019, 56 (06): : 360 - 372
  • [37] The effect of austenitising temperature on prior austenite grain size in a low-alloy steel
    Maropoulos, S.
    Karagiannis, S.
    Ridley, N.
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 483-84 (735-739): : 735 - 739
  • [38] Effect of Prior Austenite Grain Size on Strain Distribution of As-Quenched Martensitic Steel
    Shibata, Kosuke
    Fujita, Motoki
    Nanba, Shigenobu
    Koga, Norimitsu
    TETSU TO HAGANE-JOURNAL OF THE IRON AND STEEL INSTITUTE OF JAPAN, 2024, 110 (03): : 110 - 117
  • [39] Effect of prior-austenite grain size and transformation temperature on nodule size of microalloyed hypereutectoid steels
    Elwazri, AM
    Wanjara, P
    Yue, S
    METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2005, 36A (09): : 2297 - 2305
  • [40] Experimental investigation of the influence of the austenite grain size on the mechanism and kinetics of the bainite transformation in steels
    Jacques, PJ
    JOURNAL DE PHYSIQUE IV, 2003, 112 : 297 - 300
12345