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

AlSi10Mg powder and selective laser melting manufacturing process

A laser selective melting and manufacturing process technology, applied in the field of additive manufacturing, can solve the problems of expensive, unsuitable for large-scale production and application, and achieve the effect of good thermal stability

Inactive Publication Date: 2021-05-28
BEIJING UNIV OF TECH
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, Sc is very expensive and not suitable for large-scale production applications. Therefore, it is of great application value to seek rare earth elements that have a similar strengthening effect to Sc and are cheap to realize the strengthening of SLM-made aluminum alloys.

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
  • AlSi10Mg powder and selective laser melting manufacturing process
  • AlSi10Mg powder and selective laser melting manufacturing process
  • AlSi10Mg powder and selective laser melting manufacturing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] This embodiment provides a novel AlSi10Mg powder and SLM manufacturing process.

[0038] The chemical composition of the novel AlSi10Mg powder is as follows:

[0039] Si: 9.11wt%, Mg 0.30wt%, Cu≤0.05wt%, Fe: 0.11wt%, Mn: 0.37wt%, Er: 0.04at%, Zr: 0.04at%, and the balance is Al.

[0040] The new AlSi10Mg powder containing the above components was prepared by in-situ alloying by gas atomization powder production. At the same time, the powder was dried in a vacuum oven at 80°C for 8 hours before SLM manufacturing.

[0041] In this example, an EOS M100 metal 3D printer manufactured by Germany EOS Company was used to prepare experimental samples. After loading the dried new AlSi10Mg powder into the powder bin, adjust the height of the substrate and set the process parameters, among which the laser scanning power is 92W; the spot diameter of the laser scanning is 40 μm; the laser scanning distance is 50 μm; the thickness of the powder layer is 30 μm; The laser scanning spee...

Embodiment 2

[0047] This embodiment provides a novel AlSi10Mg powder and SLM manufacturing process.

[0048] The chemical composition of the novel AlSi10Mg powder is as follows:

[0049] Si: 7.75wt%, Mg: 0.31wt%, Cu≤0.05wt%, Fe: 0.11wt%, Mn: 0.33wt%, Er: 0.04at%, Zr: 0.04at%, and the balance is Al.

[0050] Using the same preparation process as in Example 1, the results show that the relative density of the Er, Zr composite microalloyed AlSi10Mg alloy tensile specimen after SLM forming of the powder provided in Example 2 can reach 99.07%, without macroscopic cracks and pores , the average microhardness value is 134.6±1HV, the tensile strength is 378±3MPa, and the yield strength is 245±3MPa. Compared with the formed sample without adding Er, Zr (compared with the Er, Zr composite microalloyed AlSi10Mg alloy tensile sample prepared in Example 2, only in the AlSi10Mg powder without adding Er, Zr) the microhardness has improved 8HV, the tensile strength increased by 11MPa, and the yield stre...

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
Average grain sizeaaaaaaaaaa
Tensile strengthaaaaaaaaaa
Yield strengthaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of additive manufacturing, and particularly relates to AlSi10Mg powder and a selective laser melting manufacturing process. The AlSi10Mg powder contains 0.02-0.2 at% of Er and 0.02-0.08 at% of Zr according to the atom percentage. According to the AlSi10Mg powder, by using the SLM technology to prepare a novel AlSi10Mg alloy, the relative density of an SLM forming sample reaches 99% or above, the microhardness is 156 + / -7 HV, the tensile strength is 461 + / -7 MPa, and the yield strength is 304 + / -4 MPa. Besides, after annealing heat treatment, the tensile strength of the AlSi10Mg alloy manufactured through the novel SLM is 411 MPa, and the yield strength is 272 MPa; and compared with a conventional AlSi10Mg alloy, the AlSi10Mg alloy possesses better heat stability and has important engineering application value in the fields of aerospace, automobile manufacturing and the like.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing, and in particular relates to an AlSi10Mg powder and a laser selective melting manufacturing process. Background technique [0002] Additive manufacturing (AM, also known as 3D printing) technology has experienced more than 30 years of research and development since it was invented in the 1980s. Since it can directly prepare high-performance, high-precision materials from three-dimensional computer-aided design models Comparing with traditional manufacturing technology, complex precision parts have many advantages, such as short cycle, no mold, and no limitation of part structure. Selective Laser Melting (SLM) technology was first researched by Fraunhofer Institute of Laser Technology in Germany in 1995. It is based on the principle of discrete accumulation and combines disciplines in various fields such as machinery, computer, numerical control, simulation, and materials. An emerg...

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): C22C21/02B22F1/00C22C1/04B22F10/28B22F3/105B33Y10/00B33Y70/00B33Y80/00
CPCB22F1/0003B33Y10/00B33Y70/00B33Y80/00C22C1/0416C22C21/02Y02P10/25
Inventor 崔丽杨天野聂祚仁黄晖贺定勇
Owner BEIJING UNIV OF TECH
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