Understanding the Behavior of Advanced High-Strength Steels Using Atom Probe Tomography

被引：37
作者：
Pereloma, Elena [1 ]
Beladi, Hossein [2 ]
Zhang, Laichang
Timokhina, Ilana [2 ]
机构：
[1] Univ Wollongong, Sch Mech Mat & Mechatron Engn, BlueScope Steel Met Ctr, Fac Engn, Wollongong, NSW 2522, Australia
[2] Deakin Univ, Ctr Mat & Fibre Innovat, Geelong, Vic 3217, Australia
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2012年 / 43A卷 / 11期
关键词：
TRANSFORMATION-INDUCED-PLASTICITY; DUAL-PHASE STEELS; BAKE-HARDENING BEHAVIOR; LOW-TEMPERATURE BAINITE; TRIP STEELS; RETAINED AUSTENITE; ALLOYING ELEMENTS; CARBON STEELS; SILICON STEEL; MICROSTRUCTURE;
D O I：
10.1007/s11661-011-0782-0
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The key evidence for understanding the mechanical behavior of advanced high strength steels was provided by atom probe tomography (APT). Chemical overstabilization of retained austenite (RA) leading to the limited transformation-induced plasticity (TRIP) effect was deemed to be the main factor responsible for the low ductility of nanostructured bainitic steel. Appearance of the yield point on the stress-strain curve of prestrained and bake-hardened transformation-induced plasticity steel is due to the unlocking from weak carbon atmospheres of newly formed during prestraining dislocations.
引用
收藏
页码：3958 / 3971
页数：14
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