Heat treatments for obtaining spheroidal cementite in ductile cast iron

被引：0
作者：
Casteletti, L.C. [1 ,4 ]
Kinap, P.E.B. [2 ,5 ]
Nascente, P.A.P. [3 ,6 ]
机构：
[1] Departamento de Engenharia de Materials, Aeronáutica e Automobilística, Escola de Engenharia de São Paulo, Universidade de São Paulo, São Carlos CEP 13566-590, SP
[2] KSB - Bombas Hidráulicas, CEP 13465-000 Americana, SP, Via SP 304
[3] Departamento de Engenharia de Materiais, Universidade Federal de São Carlos, São Carlos CEP 13656-905, SP
[4] Materials Science and Engineering, University of Sao Paulo
[5] KSB Hydraulic Pumps, Americana, SP
[6] Materials Science and Engineering, Federal University of Sao Carlos
来源：
International Journal of Materials and Product Technology | 2005年 / 24卷 / 1-4期
关键词：
Cementite; Ductile iron; Ferrite; Globular; Pearlite; Spheroidisation;
D O I：
10.1504/ijmpt.2005.007962
中图分类号：
学科分类号：
摘要：
The purpose of the present work consists in obtaining ductile cast iron that will be used in the shaft production, with the following mechanical characteristics: minimum tensile strength of 700 N/mm2, minimum yield strength of 450 N/mm2, minimum elongation of 5%, and hardness in the range of 235 HB to 285 HB. The most adequate microstructure for obtaining these desired mechanical characteristics consists of spheroidal cementite dispersed in a ferritic matrix, and this microstructure can be obtained by annealing a pearlitic microstructure or tempering a martensitic microstructure. All types of heat treatments used in this work, depending on the treatment time, led to the formation of spheroidal cementite. The material, normalised and annealed for two hours at 700°C, yielded the desired mechanical characteristics: ultimate tensile strength and yield strength values of 827 N/mm2 and 547 N/mm2, respectively, elongation of 7% and hardness value of 277 HB. Copyright © 2005 Inderscience Enterprises Ltd.
引用
收藏
页码：375 / 384
页数：9
相关论文
共 50 条
  • [41] Thermo-magnetic processing of ductile cast iron
    Putatunda, Susil K.
    Ambooken, Mony T.
    Pullum, Bobby J.
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2007, 460 : 31 - 38
  • [42] The influence of cobalt on the austempering reaction in ductile cast iron
    Yazdani, S
    Bayati, H
    Elliott, R
    [J]. INTERNATIONAL JOURNAL OF CAST METALS RESEARCH, 2001, 13 (06) : 317 - 326
  • [43] Nodule Evolution of Ductile Cast Iron During Solidification
    S. C. Murcia
    E. A. Ossa
    D. J. Celentano
    [J]. Metallurgical and Materials Transactions B, 2014, 45 : 707 - 718
  • [44] Ductility Loss in Ductile Cast Iron with Internal Hydrogen
    Hisao Matsunaga
    Teruki Usuda
    Keiji Yanase
    Masahiro Endo
    [J]. Metallurgical and Materials Transactions A, 2014, 45 : 1315 - 1326
  • [45] Continuously cast ductile iron: Processing, structures, and properties
    Chaengkham, Pongsak
    Srichandr, Panya
    [J]. JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2011, 211 (08) : 1372 - 1378
  • [46] Effect of nodule count and austempering heat treatment on segregation behavior of alloying elements in ductile cast iron
    Chiniforush, E. Akbarzadeh
    Iranipour, N.
    Yazdani, S.
    [J]. CHINA FOUNDRY, 2016, 13 (03) : 217 - 222
  • [47] Effects of welding conditions by TIG and post weld heat treatment in ductile cast iron on the corrosion resistance
    Gaxiola Peralta, A. J.
    Perez Lopez, M. J.
    Almanza Casas, E.
    [J]. STRUCTURAL AND CHEMICAL CHARACTERIZATION OF METALS, ALLOYS AND COMPOUNDS, 2013, 755 : 21 - 27
  • [48] Influencing factors on as-cast and heat treated 400-18 ductile iron grade characteristics
    Riposan, I.
    Chlsamera, M.
    Stan, S.
    [J]. CHINA FOUNDRY, 2007, 4 (04) : 300 - 303
  • [49] Influencing factors on as-cast and heat treated 400-18 ductile iron grade characteristics
    I.Riposan
    M.Chisamera
    S.Stan
    [J]. ChinaFoundry, 2007, (04) : 300 - 303
  • [50] Dual matrix structure (DMS) ductile cast iron: The effect of heat treating variables on the mechanical properties
    Rashidi, AM
    Moshrefi-Torbati, M
    [J]. INTERNATIONAL JOURNAL OF CAST METALS RESEARCH, 2001, 13 (05) : 293 - 297
12345