Indentation hardness and fatigue of the constituents of WC-Co composites

被引：18

作者：

Blanda, Marek ^{[1
,2
]}

Duszova, Annamaria ^{[3
]}

Csanadi, Tamas ^{[1
]}

Hvizdog, Pavol ^{[1
]}

Lofaj, Frantisek ^{[1
,2
]}

Dusza, Jan ^{[1
,4
]}

机构：

[1] Slovak Acad Sci, Inst Mat Res, Kosice 04353, Slovakia

[2] STU, Fac Mat Sci & Technol, Trnava 91724, Slovakia

[3] AGH Univ Sci & Technol, Acad Ctr Mat & Nanotechnol, PL-30059 Krakow, Poland

[4] Obuda Univ, Donat Banki Fac Mech & Safety Engn, H-1428 Budapest, Hungary

来源：

INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS | 2015年 / 49卷

关键词：

WC-Co; Instrumented indentation; Nanohardness; Indentation fatigue; HARDMETALS; NANOINDENTATION; CRYSTALS; BEHAVIOR; MODULUS; GRAINS; LOAD;

D O I：

10.1016/j.ijrmhm.2014.09.021

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The hardness, reduced modulus and indentation fatigue of the constituents of WC-Co cemented carbides have been investigated at a nanolevel using instrumented indentation in the range of applied loads from 025 mN to 50 mN. The influence of indentation load, microstructure, heat treatment and crystallographic orientation of WC grains/crystals has been studied. During random indentation a wide range of hardness values are connected with "mix-mode" indents, when under the indent, in its plastic/process zone not only one phase is present. Heat treatment has only a slight effect on the hardness of the constituent phases. An evident load-size effect was found during the indentation of WC grains but this was absent in the case of the Co binder. Significant influence of the crystallographic orientation of WC crystals on the hardness, indentation modulus and indentation fatigue has been found with enhanced properties in the basal plane. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：178 / 183

页数：6

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