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题名: General relationship between strength and hardness
作者: P. Zhang;  S. X. Li;  Z. F. Zhang
发表日期: 2011
关键词: Crystalline materials;  Bulk metallic glasses;  Ceramics;  Strength;  Hardness;  Yield criterion;  Indentation;  bulk metallic-glass;  high-pressure torsion;  mechanical-properties;  brittle transition;  4000 mpa;  indentation;  alloys;  deformation;  composites;  evolution
摘要: Both hardness and strength are the important properties of materials, and they often obey the three times empirical relationship in work-hardened metals and some bulk metallic glasses (BMGs). But the relationships between strength and hardness are quite different for those coarse-grained (CG) and ultrafine-grained materials, brittle BMGs and ceramics. In the present work, some Cu alloys with different microstructures, Zr-, Co-based BMGs and Al(2)O(3) were employed to analyze the general relationship between hardness and strength. Several different relationships could be gotten from the experimental results of different materials available, and three types of indentation morphologies were observed. Indentation with "sink-in" morphology always represents a state of material and one third of hardness is in the range from yield strength to ultimate tensile strength. The other two indentation morphologies induced the fully hardening of material, so hardness could represent the intrinsic mechanical property of materials. The ratios of hardness to strength are found to be affected by the piled-up behaviors and their ability of shear deformation. Combined effect of the two aspects makes hardness approximately be three times of strength in the work-hardened crystalline materials and the shearable BMGs, but higher than three times of strength in the brittle-, annealed BMGs and ceramics. (C) 2011 Elsevier B.V. All rights reserved.
部门归属: [Zhang, P.; Li, S. X.; Zhang, Z. F.] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.;Zhang, ZF (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China;
相关网址: <Go to ISI>://WOS:000297391700009
刊名: Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
内容类型: 期刊论文
ISSN号: 0921-5093
KOS主题词: Ceramics;  Strength;  Hardness;  yield criterion;  Hardness;  Mechanical properties;  Hardness;  Alloys;  Bauschinger effect;  Composites;  Composite materials;  EVOLUTION
KOS主题词(UF): Ceramic technology;  Industrial ceramics;  Keramics;  ceramic insulation;  ceramic insulating materials;  porcelain insulation;  ceramic insulators;  composite insulators;  ferroelectric ceramics;  ferroceramics;  hot pressing;  piezoceramics;  piezoelectric ceramics;  porcelain insulators;  relaxor ferroelectrics;  CERAMIQUES;  KERAMISCHE WERKSTOFFE;  Ceramics technology;  Astroceram;  Electroceramics;  Pyroceram;  Hot compression;  Pressure sintering;  强度;  硬度;  indentation;  nanoindentation;  quench hardening;  Vickers hardness;  DURETE;  HAERTE;  MICROHARDNESS;  crispness;  crunchiness;  softness;  Diamond pyramid hardness;  Core hardness;  Hot hardness;  Red hardness;  屈服准则;  硬度;  indentation;  nanoindentation;  quench hardening;  Vickers hardness;  DURETE;  HAERTE;  MICROHARDNESS;  crispness;  crunchiness;  softness;  Diamond pyramid hardness;  Core hardness;  Hot hardness;  Red hardness;  mechanical properties of substances;  CARACTERISTIQUES MECANIQUES;  MECHANISCHE EIGENSCHAFTEN;  PROPERTIES (MECHANICAL);  PROPRIETES MECANIQUES;  MECHANICAL PROPS;  material strength;  meteorite compression tests;  strength of materials;  硬度;  indentation;  nanoindentation;  quench hardening;  Vickers hardness;  DURETE;  HAERTE;  MICROHARDNESS;  crispness;  crunchiness;  softness;  Diamond pyramid hardness;  Core hardness;  Hot hardness;  Red hardness;  Metallic alloys;  alkali metal alloys;  alkaline earth alloys;  intermetallic compounds;  barium alloys;  caesium alloys;  cesium alloys;  francium alloys;  strontium alloys;  Metals (materials);  畸变;  变形与破坏;  变形与破裂;  变形;  破坏;  变形、破坏;  DEFORMATION;  Bending;  Buckling;  Distortion;  electric distortion;  signal distortion;  elongation;  BAUSCHINGER EFFEKT;  EFFET BAUSCHINGER;  DEFORMATION (FRANCAIS);  VERFORMUNG;  DISTORSION;  VERZUG;  形变;  失真;  距角;  Cold deformation;  Deforming;  Hot deformation;  MATERIAUX COMPOSITES;  VERBUNDSTOFFE;  复合材料;  Composites (Materials);  Multiphase materials;  Reinforced solids;  Solids, Reinforced;  Two phase materials;  aggregates (materials);  stone (material);  aggregation;  diffusion-limited aggregation;  carbon fibre reinforced composites;  carbon fiber reinforced composites;  graphite fibre reinforced composites;  carbon fibre reinforced plastics;  carbon fiber reinforced plastics;  CFRP;  graphite fibre reinforced plastics;  carbon fibres;  carbon fibers;  graphite fibres;  composite material interfaces;  ecocomposites;  natural fiber composites;  natural fibre composites;  wood-plastic composites;  filled polymers;  glass fibre reinforced plastics;  GFRP;  glass fiber reinforced plastics;  interface phenomena;  boundaries;  Kapitza resistance;  laminates;  nematic liquid crystals;  particle reinforced composites;  metal matrix composites, particle reinforced;  polymer dispersed liquid crystals;  liquid crystal dispersed polymers;  liquid crystal doped polymers;  semiconductor doped polymers;  composite material;  Polymer-dispersed liquid crystals;  LAMINATE;  LAMINES;  pyrographalloy;  laminated materials;  laminations;  multilayer structures;  pyrolytic graphite;  reinforced materials;  wood plastic composites;  plastic wood composites;  聚集;  团聚[作用];  Lamina;  Laminae;  gene flow;  DEGAGEMENT;  UMWAELZUNG;  Biological evolution;  Bioevolution;  Convergent evolution;  Evolution (organisms);  Natural selection;  Biogenesis
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Recommended Citation:
P. Zhang,S. X. Li,Z. F. Zhang. General Relationship Between Strength And Hardness[J]. Materials Science And Engineering A-structural Materials Properties Microstructure And Processing,2011,529:62-73.

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