【摘要】 用SEM研究了浸在Hank模拟体液小的轧态316L和铸态317L不锈钢在腐蚀疲劳期间产生的晶间腐蚀结果表明，腐蚀疲劳动的裂纹是在腐蚀晶界上孕育产生的，在疲劳应力作用下，由沿晶扩展变为穿晶扩展；晶间腐蚀不是山碳化物析出造成晶界贫Cr产生的，而是一种非敏化晶间腐蚀更多还原

【Abstract】 The behaviours of intergranular corrosion on the rolled 316L and cast 317L implant stainless steels were studied by using SEM in the process of corrosion fatigue in Hank physiological solution. It was concluded that the initial fatigue cracks engender at the corroded granular boundaries and propagate along intergranule first and then transgranule under the fatigue stress. The intergranular corrosion is not due to the chrome-deficiency induced by the precipitation of carbide at the granular boundary but due to non-sensitized intergranular corrosion.更多还原