Wear development on wiper Al2O3-TiC mixed ceramic tools in hard machining of high strength steel
Wear development on wiper Al2O3-TiC mixed ceramic tools in hard machining of high strength steel
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DOI：
10.1016/j.wear.2009.02.010
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发表时间：
2009-04-24
期刊：
影响因子：
5
通讯作者：
Grzesik, W.
中科院分区：
文献类型：
--
作者：
Grzesik, W.
本文探讨了混合陶瓷刀片对60 HRC合金钢（相当于AISI 5140或DIN 41 Cr 4）试样在干硬精车操作中发生的磨损机制。在不同的进给速度，恒定的切削速度为100米/分钟和小的切削深度为0.2毫米的切削磨损试验进行了几个光学显微镜（LOM），扫描电子显微镜（SEM）和背散射电子（BSE）技术观察磨损表面的形态特征产生的各种磨损机制。此外，通过能量色散X射线（EDX）显微分析（有时称为能量色散X射线光谱法（EDS））评估磨损产物的元素组成。因此，陶瓷刀具磨损的微观和微观结构方面被认为是。一般来说，在机械加工试验中确定的磨损机制包括磨损，断裂，塑性流动和转移层，BUE和摩擦化学效应。出现特定的磨损症状取决于在磨损区产生的机械和热条件。特别是，两种类型的材料转移与不同的形态发生在耙-芯片接口的区别。(C)2009爱思唯尔有限公司版权所有。
This paper explores the wear mechanisms occurring for the mixed ceramic inserts against 60 HRC alloy steel (equivalent to AISI 5140 or DIN 41 Cr4) specimens in dry and hard finish turning operations. Several machining wear tests were performed under varying feed rate, constant cutting speed of 100 m/min and small depth of cut of 0.2 mm. Light optical microscopy (LOM), scanning electron microscopy (SEM) and back-scattering electron (BSE) technique were employed to observe morphological features of worn surfaces produced by various wear mechanisms. In addition, the elemental compositions of wear products were evaluated by energy-dispersive X-ray (EDX) micro-analysis, called sometimes energy-dispersive X-ray spectroscopy (EDS). As a result, both microscopic and microstructural aspects of ceramic tool wear were considered. In general, wear mechanisms identified in the machining tests involve abrasion, fracture, plastic flow and transferred layers, BUE and tribochemical effects. Specific wear symptoms appeared depending on the mechanical and thermal conditions generated in the wear zones. In particular, two types of material transfer with different morphologies occurring at the rake-chip interface are distinguished. (C) 2009 Elsevier B.V. All rights reserved.