Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of nanostructure low activation martensitic steel and preparation method thereof

A technology of martensitic steel and nanostructure, which is applied in the field of metal materials, can solve the problems of high and low activation steel preparation costs, and cannot fully exert the effect of Ti precipitation strengthening, and achieve the effect of avoiding a large increase and avoiding comprehensive mechanical properties

Active Publication Date: 2021-04-06
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

"A preparation method of nano-precipitation-strengthened radiation-resistant low-activation steel (CN 109594009 A)" published by a Chinese patent, first prepares a FeTaC master alloy, and then adds the FeTaC alloy to the steel. The preparation of the master alloy improves the Preparation cost of low activation steel
At the same time, it adopts the conventional heat treatment process of Ta-containing low-activation steel, which cannot fully exert the precipitation strengthening effect of Ti.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of nanostructure low activation martensitic steel and preparation method thereof
  • A kind of nanostructure low activation martensitic steel and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0037] The preparation method of nanostructure low-activation martensitic steel of the present invention, it comprises the following steps:

[0038] (1) Preparation of consumable electrodes

[0039] Dosing and melting are carried out according to the low activation steel composition. Put Fe, Cr, W and C in a vacuum induction furnace for smelting, and then refine after the alloy is melted. The refining time is 50-70min, the refining temperature is 1600-1610°C, and the vacuum degree is 10-20Pa. After refining, reduce the power of the induction furnace to reduce the temperature of the alloy liquid to 1540-1550 °C, and add the remaining alloys from the alloy silo to the alloy liquid in the following order: Si→Mn→V→Ti, with a time interval of 1-1.5 minutes. After all the alloys are melted, nitrogen gas is introduced into the induction furnace to keep the pressure in the induction furnace at 2000-4000Pa, and the casting is carried out under nitrogen environment, and the casting te...

Embodiment 1

[0049] In the nanostructured low-activation martensitic steel of this embodiment, in terms of mass percentage, the contents of each component are: C 0.1%, Si 0.1%, Mn 0.45%, Cr 9.0%, W 1.45%, V 0.20% , Ti 0.015%, N 0.0075%, and the balance is Fe.

[0050] The preparation process of the nanostructured low-activation martensitic steel in this embodiment includes the following steps:

[0051] (1) Preparation of consumable electrodes

[0052] Dosing and melting are carried out according to the low activation steel composition. Put Fe, Cr, W and C in a vacuum induction furnace for smelting, and then refine after the alloy is melted. The refining time is 60min, the refining temperature is 1605-1610°C, and the vacuum degree is 10-15Pa. After refining, reduce the power of the induction furnace to reduce the temperature of the alloy liquid to 1545-1550 °C, and add the remaining alloys from the alloy silo to the alloy liquid in the following order: Si→Mn→V→Ti, with a time interval of...

Embodiment 2

[0063] In the nanostructured low-activation martensitic steel of this embodiment, the content of each component is: C 0.12%, Si 0.2%, Mn 0.4%, Cr 9.5%, W 1.0%, V 0.18% by mass percentage , Ti 0.01%, N 0.01%, and the balance is Fe.

[0064] The preparation process of the nanostructured low-activation martensitic steel in this embodiment includes the following steps:

[0065] (1) Preparation of consumable electrodes

[0066] Dosing and melting are carried out according to the low activation steel composition. Put Fe, Cr, W and C in a vacuum induction furnace for smelting, and then refine after the alloy is melted. The refining time is 60min, the refining temperature is 1600-1605°C, and the vacuum degree is 10-15Pa. After refining, reduce the power of the induction furnace to reduce the temperature of the alloy liquid to 1545-1550 °C, and add the remaining alloys from the alloy silo to the alloy liquid in the following order: Si→Mn→V→Ti, with a time interval of 1 minute. Afte...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a nano-structured low-activation martensitic steel and a preparation method thereof. The nano-structured low-activated martensitic steel of the present invention, in terms of mass percentage, has chemical elements including: C 0.08%-0.12%, Si 0.1%- 0.25%, Mn 0.4%-0.5%, Cr 8.5%-9.5%, W 1%-1.5%, V 0.18%-0.22%, Ti 0.01%-0.05%, N 0.0050%-0.01%, and the balance is Fe. The preparation process includes: preparation of consumable electrodes, protective electroslag remelting and refining, high-temperature forging, medium-temperature rolling and heat treatment for microstructure shaping. The invention can improve the service performance of low-activation steel structure materials.

Description

technical field [0001] The invention belongs to the technical field of metal materials, and in particular relates to a nanostructure low-activation martensitic steel and a preparation method thereof. Background technique [0002] As a kind of clean energy, nuclear fusion reactor has great strategic significance in ensuring energy security, coping with global climate change and environmental pollution, and has become a hot research topic at home and abroad. Since the working environment in the fusion reactor is far harsher than that of the fission reactor, the temperature in the reactor is higher, the pressure is higher, and the neutron irradiation intensity is greater, so higher requirements are put forward for the materials of the fusion reactor. The development of high-performance structural materials has become the key to the commercial application of fusion reactors. [0003] At the beginning of the fusion reactor design, the concept of "low activation material" was int...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/22C22C38/24C22C38/28C22C38/02C22C38/04C22C33/04C21D8/02
CPCC21D8/0205C21D8/0247C21D2211/008C22C33/04C22C38/001C22C38/02C22C38/04C22C38/22C22C38/24C22C38/28
Inventor 邱国兴
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com