Characteristic Observations on Type 316LR Stainless Steel Screws That Failed by Fatigue

ASM Failure Analysis Case Histories: Medical and Biomedical Devices Pub Date : 2019-06-01 DOI:10.31399/asm.fach.med.c0048405

引用次数: 0

Abstract

Type 316LR stainless steel screws that failed by fatigue were studied. It was found that fatigue fracture can occur on different thread levels, depending on the loading situation. The initiation of secondary fatigue cracks was occasionally found parallel to the fracture plane. The screws were used with a relatively rigid plate to treat a fracture complication in the upper end of the femur. The fatigue failures were explained by signs of unstable fixation revealed by radiographs.

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316LR型不锈钢螺钉疲劳失效特性观察

对316LR型不锈钢螺钉疲劳失效进行了研究。结果表明，不同载荷情况下，不同螺纹水平均可发生疲劳断裂。偶有平行于断裂面产生二次疲劳裂纹的现象。螺钉与相对刚性钢板一起用于治疗股骨上端骨折并发症。x线片显示的不稳定固定迹象解释了疲劳失效。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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ASM Failure Analysis Case Histories: Medical and Biomedical Devices

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