Metal Fatigue

• Autore: Murakami Yukitaka
• Pubblicazione: San Diego : , : Elsevier Science & Technology, , 2019; ©2019
• Edizione: 2nd ed.
• Descrizione fisica: 1 online resource : illustrations
• Disciplina: 620.166
• Soggetto topico: Metals - Fatigue; Metals - Defects; Metals - Inclusions
• Nota di bibliografia: Includes bibliographical references and index.
• Nota di contenuto: Front Cover -- Metal Fatigue: Effects of Small Defects and Nonmetallic Inclusions -- Copyright Page -- Contents -- Preface to the second edition -- Preface to the first edition -- 1 Mechanism of fatigue in the absence of defects and inclusions -- 1.1 What is a fatigue limit? -- 1.1.1 Steels -- 1.1.2 Nonferrous metals -- 1.2 Relationship between static strength and fatigue strength -- References -- 2 Stress concentration -- 2.1 Stress concentrations at holes and notches -- 2.2 Stress concentration at a crack -- 2.2.1 'area' as a new geometrical parameter -- 2.2.2 Effective 'area' for particular cases -- 2.2.3 Cracks at stress concentrations -- 2.2.4 Interaction between two cracks -- 2.2.5 Interaction between a crack and a free surface -- References -- 3 Notch effect and size effect -- 3.1 Notch effect -- 3.1.1 Effect of stress distribution at notch roots -- 3.1.2 Nonpropagating cracks at notch roots -- 3.2 Size effect -- References -- 4 Effect of size and geometry of small defects on the fatigue limit -- 4.1 Introduction -- 4.2 Influence of extremely shallow notches or extremely short cracks -- 4.3 Fatigue tests on specimens containing small artificial defects -- 4.3.1 Effect of small artificial holes having the diameter d equal to the depth h -- 4.3.2 Effect of small artificial holes having different diameters and depths -- 4.4 Critical stress for fatigue crack initiation from a small crack -- References -- 5 Effect of hardness HV on fatigue limits of materials containing defects, and fatigue limit prediction equations -- 5.1 Relationship between ΔKth and the geometrical parameter, area -- 5.2 Material parameter HV which controls fatigue limits -- 5.3 Application of the prediction equations -- 5.4 Limits of applicability of the prediction equations. ; 5.5 The importance of the finding that specimens with an identical value of area for small holes or small cracks have ident... -- 5.6 Effect of orientation of small defects on the fatigue limit of steels -- 5.7 Fatigue limit prediction for a small defect at a notch root -- 5.8 Summary of the area parameter model -- References -- 6 Effects of nonmetallic inclusions on fatigue strength -- 6.1 Review of existing studies and current problems -- 6.1.1 Correlation of material cleanliness and inclusion rating with fatigue strength -- 6.1.2 Size and location of inclusions and fatigue strength -- 6.1.3 Mechanical properties of microstructure and fatigue strength -- 6.1.4 Influence of nonmetallic inclusions related to the direction and mode of loading -- 6.1.5 Inclusion problem factors -- 6.2 Similarity of effects of nonmetallic inclusions and small defects and a unifying interpretation -- 6.3 Quantitative evaluation of effects of nonmetallic inclusions: strength prediction equations and their application -- 6.4 Causes of fatigue strength scatter for high-strength steels and scatter band prediction -- 6.5 Effect of mean stress -- 6.5.1 Quantitative evaluation of the mean stress effect on fatigue of materials containing small defects -- 6.5.2 Effects of both nonmetallic inclusions and mean stress in hard steels -- 6.5.3 Prediction of the lower bound of scatter and its application -- 6.6 Estimation of maximum inclusion size areamax by microscopic examination of a microstructure -- 6.6.1 Measurement of areamax for largest inclusions by optical microscopy -- 6.6.2 True and apparent maximum sizes of inclusions -- 6.6.3 Two-dimensional prediction method for largest inclusion size and evaluation by numerical simulation -- References -- 7 Bearing steels -- 7.1 Influence of steel processing -- 7.2 Inclusions at fatigue fracture origins. ; 7.3 Cleanliness and fatigue properties -- 7.3.1 Total oxygen (O) content -- 7.3.2 Ti content -- 7.3.3 Ca content -- 7.3.4 Sulphur (S) content -- 7.4 Fatigue strength of superclean bearing steels and the role of nonmetallic inclusions -- 7.5 Tessellated stresses associated with inclusions: thermal residual stresses around inclusions -- 7.6 What happens to the fatigue limit of bearing steels without nonmetallic inclusions?-Fatigue strength of electron beam r... -- 7.6.1 Material and experimental procedure -- 7.6.2 Inclusion rating based on the statistics of extremes -- 7.6.3 Fatigue test results -- 7.6.4 The true character of small inhomogeneities at fracture origins -- References -- 8 Spring steels -- 8.1 Spring steels (SUP12) for automotive components -- 8.2 Explicit analysis of nonmetallic inclusions, shot peening, decarburised layers, surface roughness, and corrosion pits i... -- 8.2.1 Materials and experimental procedure -- 8.2.2 Interaction of factors influencing fatigue strength -- 8.2.2.1 Effect of shot peening -- 8.2.2.2 Effects of nonmetallic inclusions and corrosion pits -- 8.2.2.3 Prediction of scatter in fatigue strength using the statistics of extreme -- 8.3 Mechanism of creation of residual stress by shot peeing: a typical misconception and reality -- 8.3.1 Materials and method of experiment -- 8.3.1.1 Drop shot of a steel ball -- 8.3.2 Residual stress by a single shot -- 8.3.3 Superposition of residual stresses by the second shot -- 8.3.4 Residual stresses by multiple shots -- 8.3.5 Rotating-bending fatigue test of a specimen after a single shot -- References -- 9 Tool steels: effect of carbides -- 9.1 Low-temperature forging and microstructure -- 9.2 Static strength and fatigue strength -- 9.3 Relationship between carbide size and fatigue strength -- References. ; 10 Effects of shape and size of artificially introduced alumina particles on 1.5Ni-Cr-Mo (En24) steel -- 10.1 Artificially introduced alumina particles with controlled sizes and shapes, specimens and test stress -- 10.2 Rotating bending fatigue tests without shot peening -- 10.3 Rotating bending fatigue tests on shot-peened specimens -- 10.4 Tension compression fatigue tests -- References -- 11 Nodular cast iron and powder metal -- 11.1 Introduction -- 11.2 Fatigue strength prediction of nodular cast irons by considering graphite nodules to be equivalent to small defects -- 11.3 Parameters to be considered for fatigue limit predictions -- 11.3.1 Nature of fatigue limit of NCI -- 11.3.2 Fatigue limit prediction method for NCI specimens containing small defects -- 11.3.3 Prediction of the fatigue limit of smooth specimens and the influence of microshrinkage cavities -- 11.4 Powder metal: effects of pores and microstructures -- 11.4.1 Materials and experimental procedures -- 11.4.2 Microstructure -- 11.4.3 Fatigue cracks -- 11.4.4 Effect of the size of Fe particles on fatigue strength -- References -- 12 Influence of Si-phase on fatigue properties of aluminium alloys -- 12.1 Materials, specimens and experimental procedure -- 12.2 Fatigue mechanism -- 12.2.1 Continuously cast material -- 12.2.2 Extruded material -- 12.2.3 Fatigue behaviour of specimens containing an artificial hole -- 12.3 Mechanisms of ultralong fatigue life -- 12.4 Low-cycle fatigue -- 12.4.1 Fatigue mechanism -- 12.4.2 Continuously cast material -- 12.4.3 Extruded material -- 12.4.4 Comparison with high-cycle fatigue -- 12.4.5 Cyclic property characterisation -- 12.5 Summary -- References -- 13 Ti alloys -- 13.1 General nature of fatigue fracture origin in Ti alloys -- 13.2 Very high cycle fatigue (VHCF) properties of Ti-6Al-4V alloy. ; 13.3 Effects of notches and burrs on high cycle fatigue of Ti-6Al-4V -- 13.3.1 Introduction -- 13.3.2 Test specimen and experimental method for notch effect test -- 13.3.3 Fatigue limit and the area parameter model -- 13.3.4 Crack initiation and nonpropagating cracks -- 13.3.5 Effect of a burr beside a drilled hole -- References -- 14 Torsional fatigue -- 14.1 Introduction -- 14.2 Effect of small artificial defects on torsional fatigue strength -- 14.2.1 Ratio of torsional fatigue strength to bending fatigue strength -- 14.2.2 The state of nonpropagating cracks at the torsional fatigue limit -- 14.2.3 Torsional fatigue of high carbon Cr bearing steel -- 14.3 Effects of small cracks -- 14.3.1 Material and test procedures -- 14.3.2 Fatigue test results -- 14.3.3 Crack initiation and propagation from precracks -- 14.3.4 Fracture mechanics evaluation of the effect of small cracks on torsional fatigue -- 14.3.5 Prediction of torsional fatigue limit by the area parameter model -- References -- 15 The mechanism of fatigue failure in the very high cycle fatigue (VHCF) life regime of N> -- 107 cycles -- 15.1 Mechanism of elimination of conventional fatigue limit: influence of hydrogen trapped by inclusions -- 15.1.1 Method of data analysis -- 15.1.2 Material, specimens and experimental method -- 15.1.3 Distribution of residual stress and hardness -- 15.1.4 Fracture origins -- 15.1.5 S-N curves -- 15.1.6 Details of fracture surface morphology and influence of hydrogen -- 15.2 Fractographic investigation -- 15.2.1 Measurement of surface roughness -- 15.2.2 The outer border of a fish eye -- 15.2.3 Crack growth rate and fatigue life -- 15.3 Conclusions when the first edition of this book was published -- 15.4 Mechanism of very high cycle fatigue (VHCF) and fatigue design -- 15.4.1 Mechanics of small cracks and VHCF. ; 15.4.2 Interpretation of VHCF data and mechanism of elimination of fatigue threshold.
• Sommario/riassunto: Metal fatigue is an essential consideration for engineers and researchers looking at factors that cause metals to fail through stress, corrosion, or other processes.Predicting the influence of small defects and non-metallic inclusions on fatigue with any degree of accuracy is a particularly complex part of this.Metal Fatigue: Effects of Small.
• Titolo autorizzato: Metal fatigue
• ISBN: 0-12-813876-9
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Lingua di pubblicazione: Inglese
• Record Nr.: 9911006909603321
• Lo trovi qui: Univ. Federico II