论文部分内容阅读
许多机械和工程结构均承受疲劳载荷,研究金属材料的疲劳断裂规律和寻求改善零件和构件抗疲劳断裂的途经,对发展机械制造工业、改善机械产品质量具有重要的实际意义。本书首先分析一般疲劳试验所获得的金属疲劳的宏观律,进而根据力学和金属学、宏观与微观相结合,综合讨论金属材料疲劳裂纹萌生和扩展的基本规律。然后讨论各种因素对疲劳强度的影响。最后介绍提高金属材料抗疲劳断裂性能的方法。
Many mechanical and engineering structures are subject to fatigue loads. It is of great practical significance to study the fatigue fracture rules of metal materials and seek ways to improve the fatigue resistance and fracture resistance of parts and components. It is of great practical significance to develop machinery manufacturing industry and improve mechanical product quality. This book first analyzes the macroscopic law of metal fatigue obtained by general fatigue test, and then based on the combination of mechanics and metallography, macroscopic and microscopic, comprehensively discusses the basic law of fatigue crack initiation and propagation of metal materials. Then discuss the impact of various factors on the fatigue strength. Finally, the method of improving the fatigue fracture resistance of metal materials is introduced.