Influence of ferrite fraction within martensite matrix on fatigue crack propagation: An experimental verification with dual phase steel

被引：31
|
作者：
Idris, Roslinda [1 ]
Prawoto, Yunan [1 ]
机构：
[1] Univ Teknol Malaysia, Fac Mech Engn, Skudai 81310, Johor, Malaysia
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2012年 / 552卷
关键词：
Finite element method; Ferrous alloy; Martensite; steel; Fracture; Fatigue; LOW-CARBON STEEL; HEAT-TREATMENT; MECHANICAL-PROPERTIES; BEHAVIOR; MICROSTRUCTURE; STRENGTH; GROWTH;
D O I：
10.1016/j.msea.2012.05.085
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The influence of a ferrite areal fraction within a martensite matrix on fatigue crack propagation is studied experimentally. The variation of the areal fraction is achieved by means of intercritical thermal treatment, which specifically aims at optimizing the resistance to fatigue loading. Within the intercritical annealing temperature range, the areal fraction of ferrite increases with decreasing soaking temperature. Furthermore, the experiment also reveals that the highest fatigue strength was achieved when the ferrite areal fraction was approximately 65%, which in this particular test, corresponds to 748 degrees C. It is concluded that appropriate thermal treatment can contribute to a significant improvement of fatigue properties and strength, which was also verified by computational modeling. (c) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：547 / 554
页数：8
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