Cold deformation of dezincification resistant yellow brass for plumbing applications.

In the present work, the room temperature deformation behavior of dezincification-resistant (DZR) brass was performed by varying strain rates (1 × 10⁻⁴ s⁻¹, 0.55 × 10⁻³ s⁻¹, 1 × 10⁻³ s⁻¹, 0.55 × 10⁻² s⁻¹, 1 × 10⁻² s⁻¹) and percent cold works (15 to 65% with step of 10%). These parameters are important to plumbing parts of its forming. Room temperature deformation workability map was developed that provides the selection of safe deformation parameters without cracking. The as-received and deformed DZR brass samples were carefully characterized by various microscopes. The results revealed that more dislocations lines and twinning were observed through transmission electron microscope images as the strain rate (SR) increases which led to early failure of the sample before reaching the set height reduction. It was determined that more amount of strain hardening with designed height reduction was achieved at lower SR whereas less amount of strain hardening was achieved at higher SR due to strain mismatching phenomenon and various deformation mechanisms. [ABSTRACT FROM AUTHOR]