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Record Nr. |
UNINA9911006909603321 |
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Autore |
Murakami Yukitaka |
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Titolo |
Metal Fatigue |
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Pubbl/distr/stampa |
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San Diego : , : Elsevier Science & Technology, , 2019 |
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©2019 |
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ISBN |
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Edizione |
[2nd ed.] |
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Descrizione fisica |
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1 online resource : illustrations |
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Disciplina |
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Soggetti |
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Metals - Fatigue |
Metals - Defects |
Metals - Inclusions |
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Lingua di pubblicazione |
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Formato |
Materiale a stampa |
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Livello bibliografico |
Monografia |
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Nota di bibliografia |
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Includes bibliographical references and index. |
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Nota di contenuto |
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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 |
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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 -- |
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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. |
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Sommario/riassunto |
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Metal fatigue is an essential consideration for engineers and |
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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. |
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