| 标题 |
 Analyzing barrel surface damage in failed large caliber cannons. Engineering Failure Analysis, 2024, 162, 108399 相关领域
材料科学
木桶（钟表）
复合材料
电子背散射衍射
枪口
微观结构
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Analyzing barrel surface damage in failed large caliber cannons. Engineering Failure Analysis, 2024, 162, 108399。 To elucidate the surface damage characteristics of artillery barrel bores, a dissected 155 mm failed barrel was analyzed. Utilizing macroscopic imaging, SEM and EBSD for characterization, distinct damage patterns were identified. The rifling and forcing cone regions predominantly exhibited fatigue crack patterns, while the mid-bore region also showed signs of fatigue cracks. Notably, the groove region demonstrated frictional wear features. Both the grooves and the lands region at the muzzle end were characterized by frictional wear. A significant finding was the presence of a heat-affected layer along the bore surface, extending from the breech end to the muzzle, with its thickness gradually decreasing. The radial hardness of the bore surface demonstrated a decreasing trend, with the hardness of the heat-affected layer being about double that of the matrix material. |
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