Mechanical Behavior and Microstructure of High Carbon Si-Mn-Cr Steel with Trip Effect
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概要
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The influence of the thermal cycle and austempering treatment on the mechanical behavior of a 0.56C–1.43Si–0.58Mn–0.47Cr (wt%) steel has been investigated. The thermal cycle consisted of heating the steel to 800°C or 900°C, in the intercritical and austenitic region respectively, fast cooling down to 600°C or 400°C, followed by 300 s hold. After austempering the materials were cooled at different rates and then submitted to tensile testing. The total elongation of 15–20% and tensile strength of 1300–1400 MPa were reached after heating to 900°C and transformation at 400°C. The strain-induced austenite transformation to martensite during the plastic deformation (Transformation Induced Plasticity Effect) is responsible for this combination of high strength and ductility. Silicon acts to stabilize the austenite during austempering. However, the stabilized austenite can be transformed and the microstructure modified, resulting in the formation of others constituents such as bainitic ferrite, upper bainite and martensite.
- 社団法人 日本鉄鋼協会の論文
- 2009-10-15
著者
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De Oliveira
Department Of Physiology And Pharmacology School Of Medicine Federal University Of Ceara
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SANTOS Dagoberto
Departamento de Engenharia Metalurgica e de Materiais, Escola de Engenharia-Universidade Federal de
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Pereloma Elena
Bluescope Steel Metallurgy Centre School Of Mechanical Materials And Mechatronics Engineering Facult
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BARBOSA Ronaldo
Department of Metallurgical and Materials Engineering, Federal University of Minas Gerais
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De Oliveira
Department Of Metallurgical And Materials Engineering Federal University Of Minas Gerais
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Barbosa Ronaldo
Department Of Metallurgical And Materials Engineering Federal University Of Minas Gerais
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De Oliveira
Departamento De Biologia Geral Universidade Federal De Vicosa (ufv)
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Santos Dagoberto
Department Of Metallurgical And Materials Engineering Federal University Of Minas Gerais
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Barbosa Ronaldo
Department de Engenharia Metalúrgica, Universidade Federal de Minas Gerais
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