Experimental study and numerical analysis on dry friction and wear performance of co-continuous SiC/Fe-40Cr against SiC/2618 Al alloy composites  

双连续复合材料SiC/Fe-40Cr与SiC/Al2618合金干摩擦磨损行为的实验研究与数值分析(英文)

作　　者：姜澜[1] 姜艳丽[2] 喻亮[2] 苏楠[1] 丁友东[1] 

机构地区：[1]东北大学多金属共生矿生态化冶金教育部重点实验室,沈阳110819 [2]桂林理工大学有色金属及材料加工新技术教育部重点实验室,桂林543004

出　　处：《Transactions of Nonferrous Metals Society of China》2012年第12期2913-2924,共12页中国有色金属学报（英文版）

基　　金：Project (2012BAE06B01) supported by the Key Technology R&D Program During the 12th Five-Year Plan Period, China;Projects(21201030, 51272039, 51032007) supported by the National Natural Science Foundation of China;Project (1099043) supported by the Science and Technology in Guangxi Province, China

摘　　要：The dry friction and wear behaviors of co-continuous composites SiC/Fe–40Cr against SiC/Al 2618 alloy were investigated on a ring-on-ring friction and wear tester at sliding speed of 30-105 m/s under the load of 1.0-2.5 MPa. The experimental result reveals that the characteristic of two body abrasive wear and oxidation wear mechanisms are present for SiCn/2618 Al composite under higher load and sliding speed. SiC ceramic continuous network as the reinforcement can avoid composite from the third body wear that usually occurs in traditional particle reinforced composite. The mechanically mixed layer (MML) controls greatly the wear rate and friction coefficient of the composites. The composites tested at higher sliding speed exhibit higher value of friction coefficient and fluctuation, which is associated with the intermittent formation and removal of the MML. The wear and stress—strain behaviors of SiCn/Fe–40Cr against SiCn/Al 2168 at 30-105 m/s under 1.0-2.5 MPa were analyzed by finite element method with the software Solidwork2012 Simulation, respectively. The wear and stress–strain behavior of the composite predicted by the FEM correlated well with the experimental results.利用环环式摩擦磨损试验机研究双连续复合材料SiC/Fe40Cr与SiC/2618Al合金在滑动速度30~105m/s,载荷1.0~2.5MPa条件下的干摩擦磨损性能。实验结果表明,在较高的载荷和滑动速度下,SiCn/2618Al复合材料的磨损机制是两体磨料磨损和氧化磨损。作为增强相的连续网络结构的SiC陶瓷可避免通常发生在传统的粒子增强复合材料上的第三体磨损现象。机械混合层（MML）极大地控制了复合材料的磨损速率和摩擦系数。在进行较高的滑动速度测试时,由于机械混合层的间歇的生形和消除,复合材料表现出较高的摩擦系数和波动。为了便于有限元模型（FEM）计算,用一个连续结构单元来代表三维碳化硅结构增强铝基复合材料的微观结构。

关 键 词：wear SiC/Al 2618 alloy SiC/Fe-40Cr co-continuous composite finite element method 

分 类 号：TB333[一般工业技术—材料科学与工程]