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

Heat-resistant aluminum alloy containing Mo-Be and preparation method of heat-resistant aluminum alloy containing Mo-Be

An aluminum alloy, mo-be technology, applied in the field of Mo-Be-containing heat-resistant aluminum alloy and its preparation, can solve the problems of high-temperature instantaneous strength and high-temperature lasting strength, and improve heat-resistant stability, strength and heat resistance. The effect of improving the property, improving the high temperature strength and high temperature durability

Inactive Publication Date: 2016-03-30
LIAONING TECHNICAL UNIVERSITY
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the field of heat-resistant aluminum alloy research, there are still problems of low high-temperature instantaneous strength and high-temperature durable strength.

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
  • Heat-resistant aluminum alloy containing Mo-Be and preparation method of heat-resistant aluminum alloy containing Mo-Be

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Mo-Be heat-resistant aluminum alloy, its chemical composition according to mass percentage is: Cu: 7%, Mn: 0.6%, Ni: 0.7%, Cr: 0.4%, Be: 0.35%, Mo: 0.4%, V: 0.3 %, Ti: 0.25%, B: 0.01%, Ce: 2.8%, La: 1.8%, and the balance is Al and unavoidable impurities.

[0030] A method for preparing a heat-resistant aluminum alloy containing Mo-Be, comprising the steps of:

[0031] Step 1, smelting:

[0032] Put the aluminum-chromium master alloy into the crucible, heat it to 920°C, and after it is completely melted, lower the furnace temperature to 790°C;

[0033] According to the set alloy composition, add aluminum-copper master alloy, aluminum-manganese master alloy, aluminum-beryllium master alloy, aluminum-nickel master alloy, aluminum-molybdenum master alloy, aluminum-vanadium master alloy, aluminum-titanium-boron master alloy, aluminum rare earth master alloy and aluminum , After more than 2 / 3 of the charge is melted, add HZ-WYF smokeless covering agent, the amount of coveri...

Embodiment 2

[0043] The chemical composition of heat-resistant aluminum alloy containing Mo-Be is as follows: Cu: 6.5%, Mn: 0.65%, Ni: 0.55%, Cr: 0.35%, Be: 0.4%, Mo: 0.3%, V: 0.25 %, Ti: 0.2%, B: 0.01%, Ce: 2.5%, La: 2%, and the balance is Al and unavoidable impurities.

[0044] A method for preparing a heat-resistant aluminum alloy containing Mo-Be, comprising the steps of:

[0045] Step 1, smelting:

[0046] Put the aluminum-chromium master alloy into the crucible, heat it to 920°C, and after it is completely melted, lower the furnace temperature to 780°C;

[0047] According to the set alloy composition, add aluminum-copper master alloy, aluminum-manganese master alloy, aluminum-beryllium master alloy, aluminum-nickel master alloy, aluminum-molybdenum master alloy, aluminum-vanadium master alloy, aluminum-titanium-boron master alloy, aluminum rare earth master alloy and aluminum , After more than 2 / 3 of the charge is melted, add HZ-WYF smokeless covering agent, the amount of covering ...

Embodiment 3

[0056] Mo-Be heat-resistant aluminum alloy, its chemical composition according to the mass percentage is: Cu: 6%, Mn: 0.7%, Ni: 0.6%, Cr: 0.3%, Be: 0.35%, Mo: 0.3%, V: 0.3 %, Ti: 0.25%, B: 0.015%, Ce: 2.8%, La: 2%, and the balance is Al and unavoidable impurities.

[0057] A method for preparing a heat-resistant aluminum alloy containing Mo-Be, comprising the steps of:

[0058] Step 1, smelting:

[0059] Put the aluminum-chromium master alloy into the crucible, heat it to 930°C, and after it is completely melted, lower the furnace temperature to 800°C;

[0060] According to the set alloy composition, add aluminum-copper master alloy, aluminum-manganese master alloy, aluminum-beryllium master alloy, aluminum-nickel master alloy, aluminum-molybdenum master alloy, aluminum-vanadium master alloy, aluminum-titanium-boron master alloy, aluminum rare earth master alloy and aluminum , After more than 2 / 3 of the charge is melted, add HZ-WYF type smokeless covering agent, the amount o...

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

PropertyMeasurementUnit
Tensile strengthaaaaaaaaaa
Tensile strengthaaaaaaaaaa
Tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a heat-resistant aluminum alloy containing Mo-Be and a preparation method of the heat-resistant aluminum alloy containing Mo-Be and belongs to the field of metal material engineering. The heat-resistant aluminum alloy containing Mo-Be is prepared from, by mass percent, 6%-7% of Cu, 0.5%-0.7% of Mn, 0.5%-0.7% of Ni, 0.3%-0.4% of Cr, 0.3%-0.4% of Be, 0.3%-0.4% of Mo, 0.2%-0.3% of V, 0.15%-0.25% of Ti, 0.01%-0.015% of B, 2.5%-3% of Ce, 1.5%-2% of La and the balance Al and inevitable impurities. The preparation method includes the steps that firstly, an aluminum and chromium intermediate alloy is molten, after other intermediate alloys and aluminum are added, a covering agent is added, slag is pushed aside after heat preservation, an aluminum refining agent is added, and slag is separated after heat heat preservation; secondly, casting is performed; and thirdly, cast blanks are subjected to solid solution and aging treatment. According to the alloy, due to multi-element alloying, the component range of the alloy is adjusted, high-temperature strength and high-temperature lasting performance of the alloy are remarkably improved after heat treatment, and the highest transient tensile strength reaches 260 MPa-270 MPa at 250 DEG C. Tensile strength ranges from 233 Mpa to 238 Mpa after heating is performed at 200 DEG C for 200 h, and tensile strength ranges from 187 Mpa to 195 Mpa after heating is performed at 250 DEG C for 200 h.

Description

technical field [0001] The invention belongs to the field of metal material engineering, in particular to a heat-resistant aluminum alloy containing Mo-Be and a preparation method thereof. Background technique [0002] At present, aluminum and aluminum alloys are metal materials second only to steel, and are widely used in construction, energy, transportation, aerospace and other fields. The application and research of aluminum and aluminum alloy materials have also been developed rapidly, and various aluminum alloys are widely used. [0003] Heat-resistant aluminum-copper alloys have a problem of high thermal cracking tendency in the casting process. The main reason is that the composition range of Cu, the main element of the alloy, is usually selected in the range of 4.5-5.5% in order to achieve the maximum strengthening effect. The alloy crystallization temperature range Wider, it provides sufficient conditions for the development of anisotropic dendrites during casting ...

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
IPC IPC(8): C22C21/12C22C1/03C22C1/06C22F1/057
CPCC22C1/026C22C1/03C22C1/06C22C21/12C22F1/002C22F1/057
Inventor 李明伟杨绍斌孟媛媛王鸣
Owner LIAONING TECHNICAL UNIVERSITY
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