[1]李阳,李净凯,邹云,等.超声纳米表面改性对316L不锈钢耐磨性能的影响[J].郑州大学学报(工学版),2021,42(06):50-55.
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超声纳米表面改性对316L不锈钢耐磨性能的影响()
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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:
42
期数:
2021年06期
页码:
50-55
栏目:
出版日期:
2021-11-10

文章信息/Info

Title:
Effect of Ultrasonic Nanocrystal Surface Modification on Wear Property of 316L stainless steel
作者:
李阳李净凯邹云刘书豪李大磊
文献标志码:
A
摘要:
为了改善316L奥氏体不锈钢的耐磨性能,采用超声纳米表面改性(UNSM)方法,在材料表面制备梯度纳米结构(GNS)表层。利用硬度计,微纳米力学测试系统,高速X-射线残余应力分析仪和扫描电镜等对试样表层的硬度,残余应力和显微组织进行表征,研究了不同层深梯度纳米结构表层的耐磨性能。结果表明:经过UNSM处理后,316L不锈钢的表面存在晶粒细化;梯度纳米结构表层的厚度随着UNSM处理次数的增加而增加;与未处理样品相比,表面残余压应力(CRS)从-413MPa增加到-1193MPa,表面显微硬度从306HV0.2增加到405HV0.2;UNSM处理三次时磨擦系数最小。研究表明,超声纳米表面改性能显著改善316L不锈钢的表面性能,降低摩擦系数。
Abstract:
In order to improve the wear resistance of 316L austenitic stainless steel, a gradient nanostructured (GNS) surface la<x>yer was formed by ultrasonic nanocrystal surface modification (UNSM) method. The microhardness, residual stress and microstructure of the sample surface were studied by microhardness tester, nanoindentation tester, X-ray residual stress analyzer and scanning electron microscopy. And the wear resistance of gradient nanostructured surface la<x>yers with different depth was studied. The results showed that grain refinement exists on the surface of 316L stainless steel after UNSM treatment and the thickness of gradient nanostructure la<x>yer increases with the increase of treatment times. Compared to the untreated samples, the surface residual compressive stress (CRS) increased from -413MPa to -1193MPa, the surface microhardness increased from 306 HV0.2 to 405 HV0.2, and the friction coefficient was the least when the UNSM was treated three times. The results showed that the surface properties of 316L stainless steel were significantly improved by ultrasonic nanocrystal surface modification, and the friction coefficient was reduced.
更新日期/Last Update: 2021-12-17