Cryogenic treatment cabinet is mainly used in metal cryogenic treatment industry. Cryogenic treatment of metal is a new technique to improve the properties of materials by placing the micro-structure of the material. During cryogenic treatment, a large amount of residual austenite was converted to martensite. In particular, supersaturated metastable martensite decreases supersaturation from -150 degrees… Read more Application range of metal cryogenic treatment
Tag: retained austenite
Factors affecting the volume of retained austenite
From the composition, original structure to quenching and tempering process, many factors affect the content of retained austenite after quenching and tempering. Quenching cooling rate. Without non martensitic transformation, the slower the cooling rate is, the more the retained austenite content is. For example, the retained austenite content of GCr15 steel quenched at 850 ℃… Read more Factors affecting the volume of retained austenite
Control method of retained austenite in industrial freezer cold treatment
There are always some retained austenite after quenching. Too much retained austenite is harmful to the service life and hardness of parts, which will cause the instability of soft spot and size. However, a proper amount of retained austenite can improve the fatigue strength of parts. We can control the quality and service life of… Read more Control method of retained austenite in industrial freezer cold treatment
Using industrial freezer to reduce and eliminate the generation of retained austenite after quenching
Martensitic transformation is a kind of cutting deformation core, not depending on diffusion. It’s an incomplete transformation. 1.Austenite must have enough cooling rate at high temperature, so that austenite will not undergo equilibrium decomposition at high temperature. 2.When austenite is cooled to MS point, martensitic transformation will take place, and it is formed by cooling.… Read more Using industrial freezer to reduce and eliminate the generation of retained austenite after quenching