Fracture toughness of borides formed on boronized ductile iron

被引：47
作者：
Sen, U
Sen, S
Koksal, S
Yilmaz, F
机构：
[1] Sakarya Univ, Dept Met Educ, Tech Educ Fac, TR-54187 Sakarya, Turkey
[2] Sakarya Univ, Dept Met & Mat Engn, Fac Engn, TR-54187 Sakarya, Turkey
来源：
MATERIALS & DESIGN | 2005年 / 26卷 / 02期
关键词：
boronizing; ductile irons; hardness; fracture toughness;
D O I：
10.1016/j.matdes.2004.05.015
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this study, fracture toughness properties of boronized ductile iron were investigated. Boronizing was realized in a salt bath consisting of borax, boric acid and ferro-silicon. Boronizing heat treatment was carried out between 850 and 950 degreesC under the atmospheric pressure for 2-8 h. Borides e.g. FeB, Fe,13 formed on ductile iron was verified by X-ray diffraction (XRD) analysis, SEM and optical microscope. Experimental results revealed that longer boronizing time resulted in thicker boride layers. Optical microscope cross-sectional observation of borided layers showed dentricular morphology. Both microhardness and fracture toughness of borided surfaces were measured via Vickers indenter. The harnesses of borides formed on the ductile iron were in the range of 1160-2140 HV0.1 and fracture toughness were in the range of 2.19-4.47 MPa m(1/2) depending on boronizing time and temperature. (C) 2004 Elsevier Ltd. All rights reserved.
引用
收藏
页码：175 / 179
页数：5
相关论文
共 50 条
  • [31] Estimating fracture toughness of various matrix structured ductile iron using circumferentially notched tensile bars
    Toktas, Gulcan
    Toktas, Alaaddin
    ENGINEERING FRACTURE MECHANICS, 2018, 194 : 1 - 8
  • [32] A fracture toughness model for brittle coating on ductile substrate under indentation loading
    Demidova, N. V.
    Wu, X. J.
    Liu, R.
    ENGINEERING FRACTURE MECHANICS, 2012, 82 : 17 - 28
  • [33] Evaluation of the tool life and fracture toughness of cutting tools boronized by the paste boriding process
    Campos, I.
    Farah, M.
    Lopez, N.
    Bermudez, G.
    Rodriguez, G.
    VillaVelazquez, C.
    APPLIED SURFACE SCIENCE, 2008, 254 (10) : 2967 - 2974
  • [34] Tensile properties and fracture toughness at service temperatures of an optimized pearlitic ductile iron alloy for automotive crankshafts
    Artola, G.
    Monzon, A.
    Lacaze, J.
    Sertucha, J.
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2022, 831
  • [35] Study on ductile fracture strain and fracture toughness of irradiated austenitic stainless steels
    Nishimura, S
    Sakamoto, H
    Kato, T
    Effects of Radiation on Materials: 21st International Symposium, 2004, 1447 : 15 - 31
  • [36] Effect of out-of-plane constraint on ductile fracture toughness
    Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China
    Gongcheng Lixue, 2007, 11 (19-24):
  • [37] Influence of Grain Size on the Ductile Fracture Toughness of Ferritic Steel
    Qiu, Hai
    Hanamura, Toshihiro
    Torizuka, Shiro
    ISIJ INTERNATIONAL, 2014, 54 (08) : 1958 - 1964
  • [38] Influence of austenitizing temperature on fracture toughness of a low manganese austempered ductile iron (ADI) with ferritic as cast structure
    Putatunda, SK
    Gadicherla, PK
    MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1999, 268 (1-2): : 15 - 31
  • [39] Fracture toughness evaluation of brittle or ductile materials by indentation testing
    Iost, A.
    REVUE DE METALLURGIE-CAHIERS D INFORMATIONS TECHNIQUES, 2013, 110 (03): : 215 - 233
  • [40] Effect of process time on the tribological properties of boronized GGG-80 ductile cast iron
    Sen, U
    Sen, S
    Yimaz, F
    INDUSTRIAL LUBRICATION AND TRIBOLOGY, 2005, 57 (06) : 243 - 248
12345