Influence of Microstructure on Mechanical Properties of Bainitic Steels in Railway Applications
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چکیده
منابع مشابه
The effects of chemical composition variations on microstructure and mechanical properties of nanostructured, low temperature bainitic steels
Bainitic transformation at low transformation temperatures leads to a microstructure involving fine plates of bainitic ferrite and thin films of retained austenite. This microstructure has shown ultimate tensile strength of about 2.2 GPa, noticeable uniform elongation in the range of 5 to 30%, hardness values of about 600 to 670 HV and impact toughness in the range of 30 to 40 MPa m1/2. With ca...
متن کاملthe effects of chemical composition variations on microstructure and mechanical properties of nanostructured, low temperature bainitic steels
bainitic transformation at low transformation temperatures leads to a microstructure involving fine plates of bainitic ferrite and thin films of retained austenite. this microstructure has shown ultimate tensile strength of about 2.2 gpa, noticeable uniform elongation in the range of 5 to 30%, hardness values of about 600 to 670 hv and impact toughness in the range of 30 to 40 mpa m1/2. with ca...
متن کاملA Model for the Microstructure of Some Advanced Bainitic Steels
Some applications of phase transformation theory towards the exploitation of bainitic microstructures are discussed , with particular emphasis on the quantitative aspects of alloying element effects. Examples are used to illustrate the principles involved in the design of advanced bainitic alloys of the type currently under investigation in the steel industry.
متن کاملThe Microstructure of Continuously Cooled Tough Bainitic Steels
The influence of bainite morphology on the impact toughness behaviour of a continuously cooled cementite free low carbon C-Mn-B type of steel has been examined. Different bainite morphologies were obtained by cooling from the austenite regime to ambient temperature with different cooling rates. The resulting microstructures have been quantitatively analysed using light optical microscopy (LOM),...
متن کاملAir cooled bainitic steels for strong, seamless pipes Part 2 – properties and microstructure of rolled material
In the first part of the present study, two steels were designed with the aim of achieving properties consistent with the specifications for the manufacture of seamless pipes. The alloys were intended to develop into mixtures of bainitic ferrite and carbon enriched retained austenite during cooling to ambient temperature from the pipe forming operations, thus avoiding the need for subsequent he...
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ژورنال
عنوان ژورنال: Metals
سال: 2019
ISSN: 2075-4701
DOI: 10.3390/met9070778