Preface	6
	Contents	8
	Chapter 1: Solid Solution	11
	1.1 Solubility	11
	1.2 Lattice Location	15
	1.3 Partial Molar Volume and Strain Field	16
	1.4 Atomistic Calculations of the Heat of Solution	17
	References	19
	Chapter 2: Hydrogen Trapping and Its Detection	20
	2.1 Manifestations and Analyses of Hydrogen Trapping	20
	2.1.1 Solid Solubility at Low Temperatures	20
	2.1.2 Hydrogen Thermal Desorption Analysis	24
	2.2 Partition of Hydrogen Among Different Traps	35
	2.2.1 Equilibrium Distribution	35
	2.2.2 Kinetics of Hydrogen Trapping	37
	2.3 Visualization of Hydrogen Distribution	38
	References	41
	Chapter 3: Interactions of Hydrogen with Lattice Defects	43
	3.1 Dislocations	43
	3.1.1 Experimental Results	43
	3.1.2 Theoretical Estimation of Hydrogen-Dislocation Interactions	48
	3.2 Vacancies	51
	3.2.1 Density	51
	3.2.2 Vacancy Clusters and Migration	53
	3.2.3 Interaction of Hydrogen with Vacancies	56
	3.3 Precipitates	64
	3.4 Grain Boundaries	67
	3.5 Voids and Surfaces	68
	References	69
	Chapter 4: Diffusion and Transport of Hydrogen	72
	4.1 Determination of Diffusion Coefficient	72
	4.2 Diffusion Process	75
	4.3 Hydrogen Transport by Dislocations	79
	4.3.1 Release of Internal Hydrogen	80
	4.3.2 Electrochemical Permeation	81
	References	83
	Chapter 5: Deformation Behaviors	85
	5.1 Elastic Moduli	85
	5.2 Flow Stress	86
	5.3 Stress Relaxation and Creep	93
	5.3.1 Stress Relaxation	93
	5.3.2 Creep	96
	5.3.3 Implications of Surface Effects	98
	5.4 Direct Observation of Dislocation Activity	100
	5.5 Elastic and Atomistic Calculations	101
	5.5.1 Elastic Shielding of Stress Centers	101
	5.5.2 Mobility of Screw Dislocations - Atomistic Calculations	104
	References	106
	Chapter 6: Manifestations of Hydrogen Embrittlement	108
	6.1 Tensile Tests	108
	6.2 Fracture Mechanics Tests	113
	6.2.1 Crack Initiation	114
	6.2.2 Crack Growth	119
	6.3 Fatigue	122
	6.4 Delayed Fracture	129
	6.4.1 Factors Affecting Delayed Fracture	129
	6.4.2 Incubation Period	131
	6.4.3 Effects of Environmental Variations	135
	References	138
	Chapter 7: Characteristic Features of Deformation and Fracture in Hydrogen Embrittlement	141
	7.1 Fractographic Features	141
	7.2 Strain Localization and Plastic Instability	155
	7.2.1 Strain Localization	155
	7.2.2 Plastic Instability	160
	7.3 Precursory Damage to Crack Initiation	161
	7.3.1 Generation of Damage During Mechanical Tests	161
	7.3.2 Effects of Stress History	165
	References	168
	Chapter 8: Effects of Microstructural Factors on Hydrogen Embrittlement	170
	8.1 Dislocation and Slip Configurations	171
	8.2 Impurities and Alloying Elements	181
	8.3 Heterogeneous Phases	184
	8.4 Phase Stability and Deformation Microstructures of Austenitic Stainless Steels	188
	8.4.1 Hydrides and Phase Changes	188
	8.4.2 Compositional Effects on Hydrogen Embrittlement	191
	8.4.3 Fractographic Features	195
	8.4.4 Deformation Microstructures	196
	References	198
	Chapter 9: Mechanistic Aspects of Fracture I ~ Brittle Fracture Models	200
	9.1 Internal Pressure Theory	201
	9.2 Surface Adsorption Theory	204
	9.3 Lattice Decohesion Theory	205
	9.3.1 Cohesive Strength	205
	9.3.2 Local Stress Intensity Approach	206
	9.4 Theories of Intergranular Fracture	208
	9.4.1 Interface Decohesion	208
	9.4.2 Formation of Incipient Crack - Meaning of Surface Energy in Fracture Criteria	212
	9.5 Summary of Brittle Fracture Models	216
	References	217
	Chapter 10: Mechanistic Aspects of Fracture II~Plasticity-Dominated Fracture Models	219
	10.1 Outline of Elemental Concepts of Ductile Fracture	219
	10.1.1 Void Nucleation	219
	10.1.2 Void Growth and Coalescence	220
	10.1.3 Plastic Instability	223
	10.2 Hydrogen-Enhanced Localized Plasticity Theory	227
	10.3 Adsorption-Induced Dislocation Emission Theory	230
	10.4 Autocatalytic Void-Formation and Shear-Localization Theory	231
	10.5 Hydrogen-Enhanced Strain-Induced Vacancy Theory	232
	10.5.1 Brief Summary of Findings	233
	10.5.2 Crack Growth Resistance and its Microscopic Origin	235
	10.5.3 Simulation of R-Curve and Strain Localization Near the Crack-Tip	237
	10.6 Summary of Ductile Fracture Models	238
	References	240