Description
Fracture of Steel in Energy Machine Parts: High-Temperature Creep and Hydrogen Influence presents advanced mathematical modeling approaches for evaluating the effects of high-temperature creep, hydrogen diffusion, damage accumulation, and creep development in steam pipelines, steam turbine discs, heat exchanger tubes, and steam boiler drums. The book discusses the strength and durability of metallic materials and structural elements at the stage of volumetric damage, then at local damage, and, finally, at the end of their residual life. It introduces models and algorithms for simulating these complex processes (high-temperature creep, hydrogen diffusion, damage accumulation, and creep development) that evolve at different rates in different areas of a structure. The various types of cracks are addressed, including through-thickness cracks, internal cracks, surface cracks, and elliptical cracks.- Presents computational models for evaluating the effects of creep, hydrogen, and high temperature on the steel components of energy systems- Describes the kinetics of damage accumulation and crack growth- Covers through-thickness, internal, surface, and elliptical cracks- Explores the durability and residual life of structural steel elements under a combined creep and hydrogen influence
Table of Contents
1. An energetic approach to modeling damage accumulation under creep and hydrogen action2. Evaluation of the effect of hydrogen on damage accumulation in the Bridgman specimen under high-temperature creep3. Analytical models of high-temperature creep crack growth4. Determination of the precritical growth period of oblique high-temperature creep cracks in a plate5. Evaluation of subcritical creep crack growth using the equivalent area method6. Subcritical growth of elliptical cracks of high-temperature creep7. Mathematical model for evaluating the effect of hydrogen on high-temperature creep crack growth8. Residual life of plates with a system of cracks under long-term loading in a hydrogen-containing environment9. Residual life of steam turbine disk under high-temperature creep conditions10. Residual life of steam pipelines under long-term operation11. Evaluation of metal hydrogenation and creep effects on the durability of heat exchange pipes in horizontal steam generators of a nuclear power plant12. Calculation of the residual life of a steam boiler drum under high-temperature creep and hydrogen exposure
