Failure analysis of the first shaft assembly which ruptured in the alignment has showed: There is a left-shift of eutectic point in the Fe-C equilibrium diagram when the steel contains Chromium and Manganese.

Several key factors that affect SiC, as a dispersing agent, eductior in electrolossNi-P-SiC composite coatings have been experimentally studied,and its mechanism is also partiallycarried out.

The aging process of isothermal transformation and eutectoid transformation were studied by using DSC and high temperature microscopy.

The resnlts slow that tha eutectoid transformation constituents tends to become granulation with decrease in isothermal temperature, and with extension of isothermal time the lamellar constituents become coarse of granule.

It was found that the eutectoid transformation products from β-Ti(H) were consisted of δ hydrides and α-Ti,forming a micro-polycrystalline aggregate, while γ hydride was precipitated from α-Ti(H) directly.

When aging temperature raises,little eutectoid phases precipite in the alloy at different temperature,and with the emergence of needle martensite appearing.

Influence of undercooling on dynamic transformation and microstructure evolution in eutectoid steel;

Spheroidizing and ultra-refining of structure in eutectoid steel during warm deformation;

Formation of proeutectoid ferrite during dynamic transformation of undercooled austenite in a eutectoid steel;

The spheroidizing annealing technologies were proposed with aid of calphad technique to process two kinds of UHCs through the divorced eutectoid transformation mechanism of the austenite of inhomogenous carbon concentration, which consist of austenitizing at intermediate temperature in three phases (γ(fcc)+α(bcc)+cem) equilibrium aera and soaking below the eutectoid transformation temperature.