The bainite, like martensite, grows without diffusion but some of the carbon then partitions into any residual austenite, or precipitates as cementite. A further distinction is often made between so-called lower-bainite, which forms at temperatures closer to the martensite start temperature, and upper-bainite which forms at higher temperatures.

A fine non-lamellar structure, bainite commonly consists of cementite and dislocation-rich ferrite. The high concentration of dislocations in the ferrite present in bainite makes this ferrite harder than it normally would be.The temperature range for transformation to bainite (250-550°C) is between those for pearlite and martensite.

Bainite is a plate-like microstructure that forms in steels from austenite when cooling rates are not rapid enough to produce martensite but are still fast enough so that carbon does not have enough time to diffuse to form pearlite.

Bainite is the name given to the microstructural constituent formed in steels by the decomposition of austenite at temperatures above those of martensite formation but below those at which fine pearlite is formed. This transformation is not easy to understand and has given rise to much controversy, only an outline account of which can be given ...

Apr 6, 2023 · Bainite is a microstructure of steel that forms at temperatures between 250-550°C. It is named after the British metallurgist Edgar Bain, who discovered it in 1939 while studying the properties of steel.

Jul 19, 2024 · What Does Bainite Mean? Bainite is a crystalline microstructure that can be found in steel. Bainite forms when steel is cooled slower than the rate required to form martensite but faster than the rate that would be required to form pearlite or another slower cooling rate crystalline microstructure.

Bainite is a microstructure that can be formed during heat treatment of carbon steel. It is formed by an isothermal transformation or continuous cooling of the steel. Named after the US-American metallurgist Edgar C. Bain, it is formed at temperatures and cooling rates that lie between those for martensite and pearlite formation.

May 21, 2024 · Bainite is a microstructural crystalline pattern that forms in steel during heating. It is named after Edgar C. Bain, a US metallurgist who worked on the alloying and heat treatment of steel in Pittsburgh, Pennsylvania, in the United States. Bainite is …

Dec 1, 2005 · The present report makes an attempt to review some studies by Chinese researchers on bainite in steel from the viewpoint of thermodynamics, kinetics, crystallography, microstructure, mechanism, etc. Due to the complexity of bainite transformation in steels, the extensive disagreement between the diffusion school and the shear school on bainite ...

Bainite, as a two-phase microstructure, consists of ferrite and iron carbide. There is a variation in the morphology of bainite and in the type of carbide (Fe 3 C, or ε carbide or Fe 2. 4 C) depending on the temperature of transformation and the composition of the steel as illustrated in Fig. 3.36. Bainitic microstructure can be divided into ...