Paper Title:
Fracture Properties of PCBN as a Function of Loading Rate and Temperature
  Abstract

Polycrystalline Cubic Boron Nitride (PCBN) is a super-hard material used in some of the most demanding material removal operations today. These include turning of hardened steels, as well as the machining of highly abrasive alloys. In these applications the tools are subjected to high operating temperatures, abrasive and impact loading. This can lead to the brittle fracture of the tool. Accurate determination of the fracture toughness and mechanical properties of PCBN under a wide range of operating conditions is therefore essential in order to evaluate the performance of the tool under these highly demanding conditions. For this study, a laboratory scale three point bend test rig has been used for the fracture tests. The fracture toughness of two different grades of PCBN are measured at a range of loading rates and temperatures corresponding to the actual in-service conditions. The results show the measured properties of these materials vary with both loading rate and temperature. The fracture surfaces of the specimens are examined using scanning electron microscopy to determine dominant fracture mechanisms.

  Info
Periodical
Key Engineering Materials (Volumes 452-453)
Edited by
A. Saimoto and M.H. Aliabadi
Pages
457-460
DOI
10.4028/www.scientific.net/KEM.452-453.457
Citation
D. Carolan, M. Petrović, A. Ivanković, N. Murphy, "Fracture Properties of PCBN as a Function of Loading Rate and Temperature", Key Engineering Materials, Vols. 452-453, pp. 457-460, 2011
Online since
November 2010
Keywords
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Yan Hua Zhao, Hua Zhang, Wei Dong
Abstract:The wedge splitting (WS) test is now a promising method to perform stable fracture mechanics tests on concrete-like quasi brittle materials....
425
Authors: M. Ziaee, Naghdali Choupani
Abstract:The present research examines analytically and experimentally the mode-I and mode-II and mixed mode-Interlaminar fracture toughness of PAN...
880
Authors: Nai Chao Chen, Ping He, Tian Yu Chen, Yu Jie Shen
Abstract:The fracture properties of 20g steel used as one of boiler materials, after undergoing the heat treatment of short period high temperature...
84
Authors: Fang Juan Qi, Jian Li, Zhi Juan Yang, Min Fang
Mechanical Behavior & Fracture
Abstract:Investigation shows that one of the failure modes of HDPE pipe is the crack slowly grows across the thick direction and leads to failure at...
1116