Driving force calculations in Fe-C,Fe-X-C and Cu-Zn alloys show thatthe formation of bainite by shear mechanism is thermodynamically impossi-ble.There exist superledges on the board face and curved interphase boundariesof bainite in steels,revealing that

Intermediate temperature structere(usually termed as bainite)is a gra-nular one,upperbainite(including granular bainite)or lower bainite and some-times meta-bainite(carbidefree bainite)can be obtained.Composite structureusually appears in steel due to a l

The progress of low carbon bainitic steels is briefly reviewed.The recentdevelopment of controlled utra low carbon bainitic steels are presented.Some points of view about the development of controlled rolled bainitic steelsin China are proposed.

The kinetics curves of bainite transformation of Fe-C-Si,Fe-C-Mn andthree kinds of Fe-C-Si-Mn alloys were obtained by using point countingmethod and automatic dilatometer.It can be showed from the obtained resultsthat the characteristic of kinetics of bai

With the help of X-ray diffracuion and internal friction measurement,the structural change within and beyond the incubation period of bainitictransformation in a silver-cadmium(43.3 wt-%Cd)alloy were studied.Exp-erimental results show that there are the f

By the aid of the large scale computer of M340,the prebainite transfor-mation in Fe-0.45wt-%C alloy has been simulated with Monte Carlo me-thod.The results show that there is a thin plate of depleted carbon near thedislocation pile-ups,in which a nucleus

Effect of austenite strengthening on M_s and B_s temeratures in threeFe-Ni-C alloys and three commercial steels are studied.M_s temperature lo-wers linearly with the increase of the austenite strength,while B_s seems indepen-dent of the austenit estrength

In this paper,an investigation on the kinetics and structures of isothermaltransformation at the temperatures in the vicinity of the bay temperature inTTT diagram of the Fe-C-Mo alloys is presented,and from it some new in-formation is given.There must be

The morphology of bainite in Fe-C-Si,Fe-C-Mn and Fe-C-Si-Mn alloyhas been studied by transmission electron microscopy.The result showed thatbainite in Fe-C-Si alloy is made up of a plate and retained γ between α pla-tes.As the holding time becomes longer,

Bainite transformation in a 6-5-4-2 high speed steel has been investiga-ted by means of TEM.The results show that superledges exist on the broadfaces of bainite ferrite.The radius of curvature at top of bainite subunitdecreases with the decrease of transf

TTT-diagrams of intermediate temperature in some low carbon alloy steelsusually consist of three C-curves and the structures corresponding to theseC-curves are granular one produced in higher C-curve,upper bainite pro-duced in intermediate C-curve or lowe

Low temperature temper brittleness and its causes of midcarbon silicon-manganese steels austempered at 300℃ and oil-quenched are studied.It isfound that austemper steel has higher hot stability.

The hydrogen embrittlement(HE)sensitivity and the HE fracture chara-cteristics of cold drawn 05Si2 ferrite-granular bainite(F-B_G)dual-phasewere investigated and compared with that of 05Si2 ferrite-martensite(F-M)dual-phase steel.Although F-B_G celd drawn

The kinetics,the morphology,the substructure and orientation relation-ship of bainite transformed from hot deformed recrystallized austenite andhot deformed unrecrystallized austenite of three HSLA steels have beeninvestigated.The effects of hot deformed

An electron microscopical study has been performed on quenched bainite-austenite interfaces in 55SiMnMo steel.From these observations,it is conclu-ded that the bainiticferrite-austenite is more closely associated with theWidmanstatten ferrite-austenite in