A new Al-Cu alloy for LPBF developed via ultrasonic atomization

Atomization of Alloy Constraints

Constraints in Alloy, a declarative modeling language, can be translated into Boolean logic and solved with a SAT solver. Atomization is a technique for improving the performance of Alloy analyses; it exploits typing relationships in an Alloy model and produces a semantically equivalent model that can be translated into Boolean form using fewer variables, hence creating a formula that can be so...

Precipitation of a new platelet phase during the quenching of an Al-Zn-Mg-Cu alloy.

A previously undescribed high aspect ratio strengthening platelet phase, herein named the Y-phase, has been identified in a commercial Al-Zn-Mg-Cu alloy. Differential scanning calorimetry indicates that this phase only precipitates at temperature and cooling rate of about 150-250 °C and 0.05-300 K/s, respectively. This precipitate is shown to be responsible for a noticeable improvement in mecha...

Shape Memory Properties in Cu-Zn-Al Alloy

In this research a Cu-Zn-Al alloy is produced by melting the raw materials in an electric resistance furnace and then pouring it into a steel mould. The optimum way to achieve the final analysis in the hypo-eutectoid range is determined and the influence of the alloying element, Ti on the grain size and the shape memory properties of the samples are investigated. Solution treatment (done at 850...

Aging behavior in Cu–Al–Be shape memory alloy

This article reports positron annihilation spectroscopy and calorimetric measurements of the aging behavior in a Cu–Al–Be shape memory alloy. An excess of single vacancies is retained in the alloy as a result of a quench. All vacancies in excess disappear after long aging time, and a migration energy EM51.060.1 eV for this process has been found to be larger than in other Cu-based shape memory ...

CORROSION BEHAVIOUR OF Al-Li-Cu-Mg ALLOY 8090-T651