Effect of whisker orientation on toughening behaviour and cutting performance of SiC w

Abstract

The effect of the preferred orientation of SiC whiskers (SiC_w) in an alumina based ceramic cutting tool material on its fracture behaviour has been studied. During hot pressing, the SiC whiskers tend to be oriented in planes perpendicular to the hot pressing direction (⊥HPD). The fracture toughness measured on the ⊥HPD plane was found to be noticeably higher than that measured on the plane parallel to the HPD (∥ HPD). Cutting tests revealed that the fracture resistance of the tool was dependent on which surface (⊥ or ∥ HPD) was used as the rake face. Fracture behaviour and cutting results are discussed with respect to the stress distributions predicted using a finite element method. It is suggested that, with regard to fracture resistance, the selection of the ∥ HPD plane as the rake face is more favourable.

MST/1565

Get full access to this article

View all access options for this article.

References

BECHER

P. F.

and WEI

G. C.

: J. Am. Ceram. Soc., 1984, 67, (12), C267–C269.

WEI

G. C.

and BECHER

P. F.

: Am. Ceram. Soc. Bull., 1985, 64, (2), 298–304.

TIEGS

T. N.

and BECHER

P. F.

: J. Am. Ceram. Soc., 1987, 70, (5), C109–C111.

BECHER

P. E

, HSUEN

C. H.

, ANGELINI

, and TIEGS

T. N.

: J. Am. Ceram. Soc., 1988, 71, (12), 1050–1061.

FABER

K. T.

and EVANS

A. G.

: Acta Metall., 1983, 31, (4), 565–576, 557–584.

RICE

R. W.

: Ceram. Eng. Sci. Proc., 1985, 6, (7-8), 589–607.

JENKINS

M. G.

, KOBAYASHI

A. S.

, WHITE

K. W.

, and BRADT

R. C.

: J. Am. Ceram. Soc., 1987, 70, (6), 393–395.

PIGGOT

M. R.

: J. Mater. Sci., 1970, 5, 669–675.

VIGNEAU

, BORDEL

, and LEONARD

: Ann. CIRP, 1987, 36, (1), 13–16.

10.

WAYNE

S. E

and BULJAN

S. T.

: J. Am. Ceram. Soc., 1989, 72, (2), 754–760.

11.

and XIA

C. B.

: Chinese J. Mech. Eng., 1990,3, (1), 1–8.

12.

XIAO

and AI

: in Proc. 5th Int. Conf. on ‘Production Engineering’, 174-179; 1984, Tokyo, The Japanese Society of Production Engineering.

13.

and XIAO

: ‘Application of ceramic cutting tools in engineering industry’, pp. 260; 1988, Beijing, Publishing House of the Machinery Ministry of China.

14.

VIGNEAU

and BOULANGER

J. J.

: Ann. CIRP, 1982,31, (1), 35–39.

15.

AUCOTE

and FOSTER

S. R.

: Mater. Sci. Technol., 1986, 2, 701–708.

16.

XIAO

: PhD thesis, Shandong University of Technology, China, 1990.

17.

EVANS

A. G.

and CHARLES

E. A.

: J. Am. Ceram. Soc., 1976, 59, (7-8), 371–372.

18.

LAWN

B. R.

and EVANS

A. G.

: J. Am. Ceram. Soc., 1980, 63, (9-10), 574–581.

19.

COOK

R. F.

and LAWN

B. R.

: J. Am. Ceram. Soc., 1983, 66, (12), C200–C201.

20.

BRANDT

: Surf. Eng., 1986, 2, (2), 121–131.

21.

XIAO

, AI

, and YANG

H. S.

: Wear, 1991, 148, 171–180.

Effect of whisker orientation on toughening behaviour and cutting performance of SiC w –Al 2 O 3 composite

Abstract

Get full access to this article

References