Mechanical Properties of Low-Temperature Bainite

机译：低温贝氏体的力学性能

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The mechanical properties of a bainitic microstructure with slender ferrite plates (20-65 nm in thickness) in a matrix of carbon-enriched retained austenite were characterized. The microstructure is generated by isothermal transformation at temperatures in the range 200-300℃. A yield strength as high as 1.5 GPa and an ultimate tensile strength between 1.77 to 2.2 GPa was achieved, depending on the transformation temperature. Furthermore, the high strength is frequently accompanied by ductility ( ≤ 30%) and respectable levels of fracture toughness (< 45 MPa m~(0.5)). This unusual combination of properties is attributed to the exceptionally fine scale of the carbide-free bainitic microstructure and the associated retained austenite.

机译：表征了在富碳残余奥氏体基质中具有细长铁素体板（厚度为20-65 nm）的贝氏体组织的力学性能。显微组织是在200-300℃的温度下通过等温转变产生的。取决于相变温度，获得了高达1.5 GPa的屈服强度和1.77至2.2 GPa的极限拉伸强度。此外，高强度通常伴随着延展性（≤30％）和相当高的断裂韧性水平（<45 MPa m〜（0.5））。这种不寻常的性能组合归因于无碳化物的贝氏体微观结构和相关的残余奥氏体的极小尺度。

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来源
《International Conference on Microalloying for New Steel Processes and Applications; 20050907-09; Basque Country(ES)》|2005年|P.495-501|共7页
会议地点 Basque Country(ES)
作者
C. Garcia-Mateo; F.G. Caballero; H.K.D.H Bhadeshia;
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作者单位

Department of Physical Metallurgy, Centro National de Investigations Metalurgicas (CENIM-CSIC), Avda. Gregorio del Amo, 8, 28040, Madrid, Spain;

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原文格式 PDF
正文语种 eng
中图分类冶炼方法;
关键词
low temperature bainite; mechanical properties; plate thickness; dislocation density; carbon content;

机译：低温贝氏体；力学性能；板厚；位错密度；碳含量;

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3. Wear property of low-temperature bainite in the surface layer of a carburized low carbon steel [J] . P. Zhang, F. C. Zhang, Z. G. Yan, Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear . 2011,第5a6期

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8. Tempering Effects for Lower Bainite, Martensite, and Mixed Microstructures onImpact, Fracture, and Related Mechanical Properties of ASTM A723 Steel [R] . Barranco, J. M., Cote, P. J., Kapp, J. A. 1992

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Mechanical Properties of Low-Temperature Bainite

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