Improvement of hardness and fracture toughness of surface composites fabricated by high-energy electron-beam irradiation with Fe-alloy powders and VC powders

被引：9
作者：
Nam, Dukhyun [1 ]
Do, Jeonghyeon [1 ]
Lee, Sunghak [1 ]
机构：
[1] Pohang Univ Sci & Technol, Ctr Adv Aerosp Mat, Pohang 790784, South Korea
来源：
SCRIPTA MATERIALIA | 2009年 / 60卷 / 08期
关键词：
High-energy electron beam irradiation; Surface composite; Vanadium carbide; Fracture toughness; STEEL; MICROSTRUCTURE; RESISTANCE;
D O I：
10.1016/j.scriptamat.2008.12.055
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Surface composites were fabricated by high-energy electron beam irradiation with Fe-alloy powders and VC powders, and contained a large amount (similar to 47 vol.%) of hard Cr2B and V8C7 particles without defects. According to microfracture observation, cracks were initiated at cell regions and V8C7 particles inside cells and were connected with other microcracks in a zig-zag pattern, thereby showing twice the fracture toughness and hardness than the composite fabricated without VC powders. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：695 / 698
页数：4
相关论文
共 13 条
  • [1] *ATI, 1998, ARM COAT CAT
  • [2] Bauccio M.L., 1994, ASM ENGINEERED MAT R, V2nd
  • [3] Microstructure of TiB2/carbon steel surface-alloyed materials fabricated by high-energy electron beam irradiation
    Euh, K
    Lee, S
    Shin, K
    [J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1999, 30 (12): : 3143 - 3151
  • [4] DETERMINATION OF FRACTURE-TOUGHNESS AND BRIDGING TRACTIONS FROM CRACK-OPENING DISPLACEMENT MEASUREMENTS IN PARTICULATE COMPOSITES OF DIAMOND IN ZINC-SULFIDE
    FARQUHAR, DS
    PHOENIX, SL
    RAJ, R
    [J]. ACTA METALLURGICA ET MATERIALIA, 1994, 42 (01): : 65 - 75
  • [5] A MICROSCOPIC INVESTIGATION OF THE PRECIPITATION PHENOMENA OBSERVED DURING THE PEARLITE REACTION IN VANADIUM ALLOYED CARBON-STEELS
    FOURLARIS, G
    BAKER, AJ
    PAPADIMITRIOU, GD
    [J]. ACTA METALLURGICA ET MATERIALIA, 1995, 43 (10): : 3733 - 3742
  • [6] Hardness and wear resistance of steel-based surface composites fabricated with Fe-based metamorphic alloy powders by high-energy electron beam irradiation
    Lee, Kyuhong
    Nam, Duk-Hyun
    Lee, Sunghak
    Kim, Choongnyun Paul
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2006, 428 (1-2): : 124 - 134
  • [7] Formation of carbides and their effects on stress rupture of a Ni-base single crystal superalloy
    Liu, LR
    Jin, T
    Zhao, NR
    Sun, XF
    Guan, HR
    Hu, ZQ
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 361 (1-2): : 191 - 197
  • [8] Correlation of microstructure with hardness and fracture properties of (TiC,SiC)/Ti-6Al-4V surface composites fabricated by high-energy electron-beam irradiation
    Oh, JC
    Lee, S
    [J]. SURFACE & COATINGS TECHNOLOGY, 2004, 179 (2-3) : 340 - 348
  • [9] REHN LE, 1985, SURFACE ALLOYING ION
  • [10] Stochastic model of an R-curve due to crack bridging in fibrous and textured ceramics
    Troczynski, T
    [J]. ACTA MATERIALIA, 1997, 45 (04) : 1445 - 1454
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