Effect of densification on crack initiation under Vickers indentation test

被引：144

作者：

Kato, Yoshinari ^{[1
,2
]}

Yamazaki, Hiroki ^{[1
]}

Yoshida, Satoshi ^{[2
]}

Matsuoka, Jun ^{[2
]}

机构：

[1] Nippon Elect Glass Co Ltd, Tech Div, Shiga 5208639, Japan

[2] Univ Shiga Prefecture, Sch Engn, Shiga 5228533, Japan

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2010年 / 356卷 / 35-36期

关键词：

Glasses G205; Oxydes O180; Crack growth C281; Fracture F200; BRITTLENESS; GLASSES; CERAMICS;

D O I：

10.1016/j.jnoncrysol.2010.07.015

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Crack initiation in various commercial glass compositions was investigated by measuring "crack resistance", which is determined by a series of Vickers indentation and counting of cracks around the indentation. The crack resistance of glass does not have clear relationship with hardness, fracture toughness, nor "brittleness" which is a ratio of the hardness to the fracture toughness. However, the crack resistance has a strong relationship with densification. Glass experiencing larger densification around the indentation shows higher crack resistance. Densification is assumed to reduce residual stress around the indentation, resulting in an increase in the crack resistance. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1768 / 1773

页数：6

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