News

News

For stronger 3D-printed titanium alloys – just add copper?

Data: 2020-01-03
Views: 226

For stronger 3D-printed titanium alloys – just add copper?


The ability to 3D print titanium-alloy objects certainly does open up some intriguing possibilities. That said, the finished items aren't always as strong as they could be. Now, new research suggests that adding copper to those alloys could make a big difference.


Typically, when objects are being 3D printed out of titanium alloy, a laser is used to selectively melt a powder consisting of titanium particles and other chemical elements. In this fashion, items are built up a layer at a time, as each layer of melted powder cools into a solid.


According to scientists at Australia's RMIT University, however, problematic column-shaped crystals form within the material as it cools and bonds. These ultimately make the end product more prone to cracking and distortion.


And unfortunately – unlike the case with some other metals – there are no commercially-available grain-refining compounds that can be used with titanium alloys, in order to address the problem.


Working with colleagues from CSIRO (the Commonwealth Scientific and Industrial Research Organisation), the University of Queensland and the Ohio State University, RMIT researchers instead looked to copper. More specifically, they experimented with 3D printing objects out of a titanium alloy powder that was mixed with copper powder. The resulting solid material showed great promise.


'Of particular note was its fully equiaxed grain structure: this means the crystal grains had grown equally in all directions to form a strong bond, instead of in columns, which can lead to weak points liable to cracking,' says RMIT's Prof. Mark Easton. 'Alloys with this microstructure can withstand much higher forces and will be much less likely to have defects, such as cracking or distortion, during manufacture.'


It is hoped that once the technology is developed further, such titanium-copper alloys could find use in fields such as medicine, defence and aerospace.


Via: https://newatlas.com

Note: Content may be edited for style and length.


News / Recommended news More
2020 - 05 - 14
MIM is currently the most scientific near net shape forming technology for metal parts formation. It can flexibly adjust to various performance indexes and has been successfully applied to popular areas such as auto parts, 3C digital, medical equipment and tool locks. Hence, traditional molding technologies such as CNC fine processing, to some extent, are being replaced. Although the future of MIM...
2020 - 05 - 14
The East China Powder Metallurgy Technology Exchange Meeting, rotationally presented by the powder metallurgy societies in East China, has been successfully held for 17 years since 1982. It’s considered as one of the important platforms for China's powder metallurgy industry exchanges, and has actively promoted the flourishing development of the industry and related industries in East China and ev...
2020 - 05 - 14
Advanced ceramics are widely applied in industry sectors, high-tech world and new industries. With annual growth rate of 8%, its market in China values hundreds of billions of CNY. In recent years, the acceleration of China’s high-end industries and new industries development, for example, advanced manufacturing, 5G communications, semiconductor equipment and chip packaging, 3D printing and new en...
2020 - 05 - 14
Ceramic 3D printing can be used in preparation of multifunctional ceramics with complex structure and high precision, and will be widely used in architecture, engineering, medicine, aerospace and more. In recent years, metal and plastic 3D printing companies is shifting to the ceramic materials field that has increasing demand for strong, tough and high temperature resistant parts, which promotes ...
Share:
Uniris Exhibition Shanghai Co., Ltd.
Shanghai Branch
Tel:4000 778 909
E-mail:irisexpo@163.com
  
Guangzhou Branch
Tel:020-8327 6389
E-mail:pmchina@unifair.com

CCEC CHINA official website
犀牛云提供企业云服务
Scan the QR code to visit the official website by phone