I D
× COMMENTARYCOVER STORYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More
Chemical EngineeringChementator Briefs
Ethylene dichloride Recently, Chemetry (Moss Landing, Calif.; www.chemetrycorp.com) and Braskem…
BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILEENGINEERING PRACTICEEQUIPMENT & SERVICESFOCUSNEW PRODUCTS + Show More

Comment

High-strength Al alloy for 3-D printing is moving into commercial production

By Scott Jenkins |

The first high-strength, wrought-aluminum alloy powder designed for use in additive manufacturing (3-D printing) applications is moving into commercial production. The powder was developed by HRL Laboratories (Malibu, Calif.; www.hrl.com) for use in laser powder-bed fusion 3-D printers. The company recently announced that the material has been registered by the Aluminum Association (Arlington, Va.; www.aluminum.org). The alloy material was originally described in a 2017 Nature paper. High-strength wrought aluminum alloys in the 7000 and 2000 series have been used for decades because of their strength and low-cost alloying additives (Zn, Mg and Cu), explains HRL’s Zak Eckel. These alloys are used widely, from aircraft components and industrial equipment to sporting goods, but they have not been successfully 3-D-printed before. The main barrier to 3-D-printing of high-strength Al alloys from metal powder is that rapid melting and solidification of the feed material in 3-D printing gives rise to suboptimal crystal structure in the metal product. Because aluminum’s coefficient of thermal expansion and other properties strain the crystal structure, cracks develop easily in the solidified aluminum. Grain refinement in metal alloys…
Related Content

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
Top five technologies for drying in chemical applications
Crude distillation unit (CDU) optimization
Upstream Oil & Gas: Automation intelligence from wellhead to distribution
Metering gas in biogas plants
Wet process analyzer for FPD and solar cell manufacturing for semi-conductors

View More