The stretch zone of automotive steel sheets

被引：10
作者：
Ambrisko, L' [1 ]
Pesek, L. [2 ]
机构：
[1] Tech Univ Kosice, Fac Civil Engn, Inst Struct Engn, Kosice 04200, Slovakia
[2] Tech Univ Kosice, Fac Met, Dept Mat Sci, Kosice 04200, Slovakia
来源：
SADHANA-ACADEMY PROCEEDINGS IN ENGINEERING SCIENCES | 2014年 / 39卷 / 02期
关键词：
Stretch zone; thin sheet; videoextensometry; CTOD; deformation and fracture; electron microscopy; FRACTURE-TOUGHNESS; WIDTH;
D O I：
10.1007/s12046-013-0199-0
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The paper deals with an experimental determination of the stretch zone dimensions in the notch tip in thin steel sheets. The stretch zone dimensions depend on steel grade, on the rolling direction as well as on the loading rate. Stretch zones were observed and measured on three steel grades. Fracture area and stretch zones were analysed by SEM. Stable crack growth was monitored by videoextensometry techniques on CT (Compact Tension) specimens. Specimens were loaded under two loading rates by eccentric tension, whereby the deformation in the notch surrounding area was recorded using a non-contact measurement-videoextensometry technique. Linear relation between the stretch zone dimensions was determined.
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页码：525 / 530
页数：6
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