Thermodynamic, Tribological and Chemical Interdiffusion Study of Ultra-Hard Ceramic AlMgB14 in the Machining of Aerospace Alloys

Manufacturing ◽  
2003 ◽  
Author(s):  
Vikram Bedekar ◽  
Deepak G. Bhat ◽  
Stephen A. Batzer ◽  
Larry Walker ◽  
L. F. Allard
Keyword(s):  
Titanium Alloys ◽  
Cutting Tool ◽  
Wear Behavior ◽  
Chemical Reactivity ◽  
Cutting Tools ◽  
Tool Material ◽  
Work Piece ◽  
Tool Materials ◽  
Aerospace Alloys ◽  
Cutting Tool Materials

There has been a growing concern about the reactivity at the tool/work-piece interface during machining, leading to lower tool life. The problem is more severe especially in the case of aerospace alloys such as Ti-6Al-4V and stainless steels. Recently, a new ultra hard ceramic material, AlMgB14, was reported with properties that show considerable promise as a cutting tool material for machining titanium alloys [1]. This paper investigates the chemical wear behavior of AlMgB14, in the machining of aerospace alloys. The mechanical properties of AlMgB14 are compared with leading cutting tool materials (WC-Co, Al2O3SiCw-TiC and Al2O3-TiC), which are used extensively in machining titanium and ferrous alloys. Materials characterization of candidate tool materials shows that AlMgB14 exhibits superior hardness, fracture toughness and abrasive wear resistance as compared to the other cutting tool materials. We also report on a study of chemical reactivity of tool materials (AlMgB14 and WC-6%Co) in machining various alloys such as Ti-6Al-4V and Fe-18Ni-8Cr. The chemical reactivity was investigated using diffusion tests conducted in vacuum at 1000°C for 120 hrs. Transverse sections of couples were characterized using electron probe micro analysis (EPMA), to determine the extent of diffusion zones. The results show that AlMgB14 shows considerably less reactivity with titanium alloys when compared with cemented carbide cutting tools. It was also observed that the boride reacts significantly with the iron based Fe-18Ni-8Cr alloy. The paper also reports on the evaluation of the free energy of formation of AlMgB14 using the thermochemical software program FactSage™.

Friction and Wear of Typical Tool Material at Elevated Temperature

2011 ◽  
Vol 199-200 ◽  
pp. 646-650 ◽  
Author(s):  
Hui Zhang ◽  
Jian Xin Deng ◽  
Ze Wu ◽  
Xing Ai ◽  
Jun Zhao
Keyword(s):  
Friction Coefficient ◽  
Friction And Wear ◽  
Cutting Tool ◽  
Wear Behavior ◽  
Tool Material ◽  
Cemented Carbide ◽  
Friction And Wear Behavior ◽  
Tool Materials ◽  
Worn Surface ◽  
Cutting Tool Materials

The friction and wear behavior of cutting tool materials keeps an issue. In this study, an high temperature tribometre (UMT-2) was used to investigated the tribology properties and mechanism of two kinds of typical cutting tool materials. Commonly used cemented carbide (ZU5) and ceramic (AT) were chosen. The characteristics as to wear rate, friction coefficient and worn surface were studied. From the results, we found that the ceramic had better wear resistance than the cemented carbide. The friction coefficient of cemented carbide decreased with the increase of ambient temperature while the ceramic exhibited an inverse tendency. Finally, the probable wear mechanism was discussed.

On the Wear of Carbide and Cermet Tools in Machining of Compacted Graphite Iron (CGI)

2007 ◽  
Author(s):  
K. Philip Varghese ◽  
A. K. Balaji
Keyword(s):  
Cutting Tool ◽  
Wear Behavior ◽  
Cutting Tools ◽  
Substrate Material ◽  
Tribological Performance ◽  
Compacted Graphite Iron ◽  
Compacted Graphite ◽  
Tool Materials ◽  
Cutting Tool Materials ◽  
Wear Tests

This work presents an extension of a previous investigation [1] conducted on gaining an understanding of the critical tribological issues encountered in the machining of compacted graphite iron (CGI) using different cutting tool materials. As part of this study, wear tests were conducted on flat-faced coated and uncoated carbide tools and coated and uncoated cermet tools. The machining tests were conducted under dry condition. Performance assessment of the cutting tools was made using a comparative analysis of the measured cutting forces and post machining scanning electron microscopy (SEM) of used tools. The results reveal the interaction of selected cutting conditions and tool substrate material and coatings on the tribological performance and wear behavior of tools during CGI machining.

Research on Tool Materials for High-Speed Cutting

2014 ◽  
Vol 644-650 ◽  
pp. 4792-4794 ◽  
Author(s):  
Guo Ru Xie ◽  
Wei An Xie
Keyword(s):  
High Speed ◽  
Cutting Tool ◽  
Cutting Tools ◽  
Research Direction ◽  
Advanced Manufacturing ◽  
High Speed Cutting ◽  
Tool Materials ◽  
Coated Tools ◽  
Development Direction ◽  
Cutting Tool Materials

The high-speed cutting is an advanced manufacturing technology with efficient, high quality and low consume, it is also the development direction of cutting. The concept and characteristic of high-speed cutting is discussed. The performance and application of the major tool materials (such as ceramic cutting tools, diamond tools, CBN tools, coated tools) for high-speed cutting is described. At last, the paper discusses the developing prospect and research direction for high-speed cutting tool materials.

Progress on Research of Machining of Difficult-to-Machine Materials Using CBN Cutting Tools

2015 ◽  
Vol 723 ◽  
pp. 910-913
Author(s):  
Shi Long Gao ◽  
Li Bao An ◽  
Xiao Chong Wang ◽  
Song Gao
Keyword(s):  
Metal Cutting ◽  
Cutting Tool ◽  
Cubic Boron Nitride ◽  
Cutting Tools ◽  
High Hardness ◽  
High Wear Resistance ◽  
High Chemical ◽  
Tool Materials ◽  
Chemical Inertness ◽  
Cutting Tool Materials

Some engineering materials have excellent performances, but the machining of these materials is a problem. It is very inadequate to meet machining requirement only using traditional cutting tool materials. Therefore, exploring the machinability of difficult-to-machine materials and applying appropriate cutting tool materials have drawn much attention in metal cutting industry for guarantied product quality and productivity. Cubic boron nitride (CBN) has been recognized as one of the most suitable cutting tool materials due to its high hardness, high wear resistance, high chemical inertness, and excellent chemical stability in high temperature. Research on various aspects of CBN cutting performances has been conducted in recent years. This paper presents the progress on machining difficult-to-machine materials using CBN cutting tools.

Research and Development of Nano-Micro Composite Gradient Self-Lubricating Ceramic Cutting Tools

2012 ◽  
Vol 602-604 ◽  
pp. 512-517 ◽  
Author(s):  
Xiu Guo Xu ◽  
Chong Hai Xu ◽  
Bin Fang ◽  
Chun Lin Wang ◽  
Ming Dong Yi
Keyword(s):  
Cutting Tool ◽  
Cutting Tools ◽  
The Self ◽  
Tool Materials ◽  
Development Status ◽  
Frictional Properties ◽  
Ceramic Cutting Tool ◽  
Nanometer Materials ◽  
Design Idea ◽  
Cutting Tool Materials

The development status of self-lubricating tool materials was reviewed in the present study, as well as the five basic types of self-lubricating tool and the current situation of nanometer materials in ceramic cutting tool. Based on these, the design idea of the functional gradient materials and nano-micro composite materials was introduced into the self-lubricating ceramic cutting tool materials, in order to develop new self-lubricating ceramic cutting tool materials with both good mechanical and frictional properties.

Establishment of the Low Defect Ceramic Cutting Tool Database

2013 ◽  
Vol 589-590 ◽  
pp. 357-360 ◽  
Author(s):  
Chang Bin Zou ◽  
Chuan Zhen Huang ◽  
Bin Zou ◽  
Yu Huan Fei ◽  
Han Lian Liu ◽  
...  
Keyword(s):  
Data Structure ◽  
Cutting Tool ◽  
Tool Material ◽  
Material System ◽  
Chemical Compatibility ◽  
Tool Materials ◽  
Abnormal Growth ◽  
Ceramic Cutting Tool ◽  
Preparation Stage ◽  
Cutting Tool Materials

This paper analyzes the reasons of the defects generation of the ceramic cutting tool materials. The defects in the ceramic cutting tool materials are caused by chemical compatibility and physical mismatch during the designing process, and caused by grain abnormal growth and sintering parameters during the preparation stage. The database of low defect ceramic cutting tool is established and the data structure of the database is described. The users can use the database to design the tool material system through the mode that can reduce the defects.

scholarly journals Materials, properties, manufacturing methods and cutting performance of innovative ceramic cutting tools − a review

2019 ◽  
Vol 6 ◽  
pp. 19 ◽  
Author(s):  
Sergey N. Grigoriev ◽  
Sergey V. Fedorov ◽  
Khaled Hamdy
Keyword(s):  
Cutting Tool ◽  
Cutting Tools ◽  
Tool Materials ◽  
Advantages And Disadvantages ◽  
Plasma Sintering ◽  
Complex Process ◽  
Tool Performance ◽  
Spark Plasma ◽  
Mechanical Machining ◽  
Cutting Tool Materials

For mechanical machining the quality of cutting-tool materials is one of the most significant issues that need to be addressed. Enhancement of cutting tool performance may be achieved through the use of modern composition ceramic cutting tools This may be enabled through surface treatment, and also hot pressing and spark plasma sintering – the two main processes used for manufacturing such tools. In this article the advantages and disadvantages of the technologies and processes involved are analyzed and compared to identify the most appropriate methods for creating ceramic cutting-tools. In parallel the latest improvements in ceramic cutting-tool materials are reviewed. The paper shows that the choice of ceramic cutting tools is a quite complex process with a number of important factors to be taken into account.

Research Progress in Technology of Diamond Cutting Tools

2015 ◽  
Vol 1095 ◽  
pp. 842-845 ◽  
Author(s):  
Yi Dan Zhou ◽  
Gai Ma ◽  
Xiao Dan Chen
Keyword(s):  
Cutting Tool ◽  
Cutting Tools ◽  
Research Progress ◽  
Future Trends ◽  
Excellent Performance ◽  
Diamond Cutting ◽  
Tool Materials ◽  
Diamond Cutting Tools ◽  
Diamond Cutting Tool ◽  
Cutting Tool Materials

With the improvement of machining technology, diamond cutting tools are used more and more widely due to the excellent performance of diamond. This document briefly introduced the diamond cutting tool materials and the synthetic technologies, as well as the types of diamond cutting tools. Development situation of methods of machining diamond cutting tools and the grinding technology were also expounded. At the end of the dissertation, summery and future trends of diamond cutting tool technologies were outlined.

Particle -Reinforced SiAlONs for Cutting Tools

2007 ◽  
Vol 554 ◽  
pp. 129-134 ◽  
Author(s):  
Bernd Bitterlich ◽  
Kilian Friederich
Keyword(s):  
Mechanical Properties ◽  
Cutting Tool ◽  
Cutting Tools ◽  
Life Time ◽  
Tool Materials ◽  
Hard Particles ◽  
Strong Competition ◽  
Alpha Beta ◽  
Further Development ◽  
Cutting Tool Materials

CeramTec AG is a well-known manufacturer of cutting tool materials, especially for inserts based on silicon nitride. Some years ago it started the production of alpha/beta-SiAlONs because of their superior properties. Due to strong competition in the cutting tool business there is a constant need for further development of the cutting tool materials. One possibility to increase wear resistanceand life time of cutting tools is to increase the hardness and maintaining the good toughness at the same time. This can be done by adding hard particles like e.g. SiC to an alpha/beta- SiAlON. In 2003 an improved grade had been presented: a SiC-reinforced alpha/beta-SiAlON. This composite material shows a significantly reduced wear during machining of cast iron. The effect of SiC-addition on mechanical properties is discussed.

Effect of Cutting Tool Materials on Surface Roughness and Cutting Forces in Machining of Al-Si3N4 Composite Produced by Powder Metallurgy

2007 ◽  
Vol 534-536 ◽  
pp. 869-872 ◽  
Author(s):  
Yusuf Ozcatalbas ◽  
Ersin Bahceci ◽  
Mehmet Turker
Keyword(s):  
Surface Roughness ◽  
Powder Metallurgy ◽  
Cutting Forces ◽  
Cutting Tool ◽  
Volume Fraction ◽  
Cutting Tools ◽  
Cutting Performance ◽  
Tool Materials ◽  
The Matrix ◽  
Cutting Tool Materials

In this study, aluminum-based composites reinforced with various amounts of α-Si3N4 were produced by powder metallurgy (P/M). The machinability properties of MMCs were determined by means of cutting forces and surface roughness. Machining tests were carried out by using PCD and K10 cutting tools. Increasing of Si3N4 volume fraction in the matrix resulted in a decrease of the surface roughness and turning forces. PCD cutting tools showed better cutting performance than K10 tools. Surface roughness and turning forces were decreased significantly by PCD tool.

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