Super austenitic stainless steel with low precipitation phase precipitation and method for its preparation and heat treatment
A technology of austenitic stainless steel and heat treatment method, applied to super austenitic stainless steel with low precipitation phase precipitation and its preparation and heat treatment fields, can solve the problems of easy solidification segregation, deterioration of steel properties, etc., to promote enrichment and inhibit precipitation. , Improve the effect of thermal processing and service performance
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0030] Example 1: Preparation of B, Ce microalloyed super austenitic stainless steel
[0031] Using a 50kg induction furnace to smelt the super austenitic stainless steel of the present invention specifically includes the following steps:
[0032] 1) Smelt in a 50Kg vacuum induction furnace according to the alloy composition ratio shown in Table 1, cast it into an ingot of 120×100×500mm in a vacuum state, and take it out from the mold after the ingot is air-cooled;
[0033] 2) The ingot was kept at 1200°C for 10h with a resistance heating furnace, cooled to room temperature in air, and then the ingot was heated to 1230°C with the furnace and kept for 30min, and then rolled on a Φ550 type hot rolling mill to a thickness of 17mm. steel plate.
[0034] Table 1. Composition of B and Ce microalloyed super austenitic stainless steels
[0035]
[0036] After grinding, polishing and corroding the sample, its structure and morphology were observed by scanning electron microscope, ...
Embodiment 2
[0037] Example 2: Precipitation phase distribution after high temperature aging treatment of super austenitic stainless steel with low precipitation phase precipitation.
[0038] The low precipitation of the grain boundary σ phase during high temperature aging of B and Ce microalloyed super austenitic stainless steel is achieved by staged rate-controlled cooling and low-temperature aging treatment, which specifically includes the following steps:
[0039] 1) Solution treatment: A 15×15×12mm sample was cut from the super austenitic stainless steel plate prepared according to Example 1, the temperature of the box furnace was raised to 1200°C, and the sample was placed in a 1200°C box furnace for heat preservation and solid solution Treatment for 0.5h; all solution treatments were carried out in an inert atmosphere.
[0040] 2) Staged rate-controlled cooling treatment: Cool the solution-treated samples to 1100°C at a rate of 90°C / min, and then air-cool to room temperature.
[00...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More