冲击功对8Mn-2Cr-Si钢磨粒磨损性能的影响

研究了不同冲击功对8Mn-2Cr-Si钢磨粒磨损性能的影响,利用X射线衍射仪分析了试样冲击表面的组织相变过程,并利用扫描电子显微镜对材料磨损表面及亚表层进行分析,探讨其磨损机制.结果表明：8Mn-2Cr-Si钢在冲击磨损过程中,冲击诱发马氏体相变,且冲击功越大,马氏体相变量越多,材料加工硬化效果越好;但随着冲击功的增大,材料磨损失重增多,主要是由于不同冲击功条件下磨损机制不同,并且材料塑性变形阶段使磨粒嵌入基体,成为应力集中源,在循环冲击过程中产生疲劳裂纹,逐渐扩展至材料表面,最终形成大块剥落使材料严重磨损失效....

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Published in东北大学学报（自然科学版） Vol. 39; no. 2; pp. 211 - 215
Main Author 盛忠起;宋百隆;魏世丞;王玉江
Format Journal Article
LanguageChinese
Published 东北大学机械工程与自动化学院,辽宁沈阳,110819%东北大学机械工程与自动化学院,辽宁沈阳 110819 2018
陆军装甲兵学院装备再制造技术国防科技重点实验室,北京 100072%陆军装甲兵学院装备再制造技术国防科技重点实验室,北京,100072
Subjects
8Mn-2Cr-Si钢
冲击功
磨损机制
磨粒磨损
马氏体相变
impact energy
martensitic transformation
磨损机制
abrasive wear
磨粒磨损
冲击功
8Mn-2Cr-Si steel
马氏体相变
wear mechanism
8Mn-2Cr-Si钢
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ISSN1005-3026
DOI10.12068/j.issn.1005-3026.2018.02.013

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Summary:研究了不同冲击功对8Mn-2Cr-Si钢磨粒磨损性能的影响,利用X射线衍射仪分析了试样冲击表面的组织相变过程,并利用扫描电子显微镜对材料磨损表面及亚表层进行分析,探讨其磨损机制.结果表明：8Mn-2Cr-Si钢在冲击磨损过程中,冲击诱发马氏体相变,且冲击功越大,马氏体相变量越多,材料加工硬化效果越好;但随着冲击功的增大,材料磨损失重增多,主要是由于不同冲击功条件下磨损机制不同,并且材料塑性变形阶段使磨粒嵌入基体,成为应力集中源,在循环冲击过程中产生疲劳裂纹,逐渐扩展至材料表面,最终形成大块剥落使材料严重磨损失效.
Bibliography:21-1344/T
8Mn-2Cr-Si steel; impact energy; abrasive wear; wear mechanism; martensitic transformation
SHENG Zhong-qi1,SONG Bai-long11,WEI Shi-cheng1,WANG Yu-jiang1（1. School of Mechanical Engineering ＆Automation,Northeastern University,Shenyang 110819, China;2. National Key Laboratory for Remanufacturing,Academy of Army Armored Force,Beijing 100072, China.）
The abrasive-wear properties of 8 Mn-2 Cr-Si steel were tested under different impact energy conditions. XRD（ X-ray diffractometer） was used to investigate the structural transformation of the impacted wear surface,and SEM（ scanning electron microscope） was used to investigate the morphology of wear surface and subsurface in order to study wear mechanism. The results show that impact-induced martensite phase transformation occurs during the wear. With the impact energy growing,the amount of martensite transformation increases,the work hardening effect improves and the wear loss increases. The reason is the wear mechanisms are different under different impact e
ISSN:1005-3026
DOI:10.12068/j.issn.1005-3026.2018.02.013