ADIABATIC SHEAR BAND FORMATION IN AL-SIC(W) COMPOSITES

被引：23

作者：

LEE, SH

CHO, KM

KIM, KC

CHOI, WB

机构：

[1] PUSAN NATL UNIV,DEPT MET ENGN,PUSAN 709735,SOUTH KOREA

[2] AGCY DEF DEV,ADV TECH RES CTR,DAJEON 300600,SOUTH KOREA

来源：

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 1993年 / 24卷 / 04期

关键词：

D O I：

10.1007/BF02656510

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The objective of this study is to investigate the adiabatic shear band formation in 2124-T6 aluminum composites reinforced with SiC whiskers. The composites were deformed at high strain rates by ballistic impact. Adiabatic shear bands initiated from cracks near the impacted region were observed. The shear bands tended to propagate along the extrusion direction, since they were blocked by SiC whiskers. With the shear bands, microvoids and microcracks formed, presumably by the temperature rise. Shear bands, together with microvoids and microcracks, deteriorated the impact resistance of target materials. Finally, performance of the composites against ballistic impact loading was discussed by comparing the behavior of shear banding with dynamic fracture toughness.

引用

页码：895 / 900

页数：6

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