Stress-strain state in the grit-matrix system of a diamond tool under force disturbances

Yakhutlov, Martin M.; Karamurzov, B. S.; Batyrov, Umar D.; Oshkhunov, M. M.; Kardanova, Marianna R.

doi:10.3103/s1063457609060100

Cited by 4 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…where P y is the tensile yield stress for the matrix material; R is the radius of the plastic zone; K m , µ m and α m are the bulk modulus, shear modulus and coefficient of thermal expansion of the matrix respectively; K 1 and α 1 are the bulk modulus and coefficient of thermal expansion of the diamond, respectively; and ∆T is the temperature decrease during cooling. In recent years, numerical computation methods have been widely used to study diamond retention in the matrix, and have been utilized to evaluate thermal residual stresses [92][93][94][95], local plastic deformation [13,96] and interfacial pullout behavior [4,11]. Cracks are easily generated at the interface due to large thermal stresses; a decrease in thermal residual stress is beneficial to diamond retention strength [29].…”

Section: Mechanical Calculation Methodsmentioning

confidence: 99%

A Review of the Diamond Retention Capacity of Metal Bond Matrices

Xiao-jun

Duan

2018

Metals

View full text Add to dashboard Cite

This article presents a review of the current research into the diamond retention capacity of metal matrices, which largely determines the service life and working performance of diamond tools. The constitution of diamond retention capacity, including physical adsorption force, mechanical inlaying force, and chemical bonding force, are described. Improved techniques are summarized as three major types: (1) surface treatment of the diamond: metallization and roughening of the diamond surface; (2) modification of metal matrix: the addition of strong carbide forming elements, rare earth elements and some non-metallic elements, and pre-alloying or refining of matrix powders; (3) change in preparation technology: the adjustment of the sintering process and the application of new technologies. Additionally, the methods used in the evaluation of diamond retention strength are introduced, including three categories: (1) instrument detection methods: scanning electron microscopy, X-ray diffractometry, energy dispersive spectrometry and Raman spectroscopy; (2) mechanical test methods: bending strength analytical method, tension ring test method, and other test methods for chemical bonding strength; (3) mechanical calculation methods: theoretical calculation and numerical computation. Finally, future research directions are discussed.

show abstract