CAJ | 학술논문

该文就一例不锈钢接骨螺钉断裂失效原因进行初步探讨，通过外观检查、硬度、金相显微组织、表面缺陷、材料化学成分检测等手段，对不锈钢接骨螺钉断裂的原因进行分析。结果表明，不锈钢接骨螺钉断裂的原因为其表面存在的(裂纹)不连续缺陷，在使用过程中，受到循环应力作用，不断扩展最终导致的疲劳断裂。
해문취일례불수강접골라정단렬실효원인진행초보탐토，통과외관검사、경도、금상현미조직、표면결함、재료화학성분검측등수단，대불수강접골라정단렬적원인진행분석。결과표명，불수강접골라정단렬적원인위기표면존재적(렬문)불련속결함，재사용과정중，수도순배응력작용，불단확전최종도치적피로단렬。
In this paper,the fracture failure of Stainless Steel Bone Screws was studied preliminarily.The anal-ysis of appearance examination,hardness,microstructure,flaw of the surface and chemical composition have been done to Stainless Steel Bone Screws which were fractured in human body.The test results have shown that the fracture reason was microcracks existed in the Stainless Steel Bone Screws.The microcracks are the region source of the fracture and keep expanding by the cyclic stress in the processing of using until the Stainless Steel Bone Screws broke fatigue in two parts.