About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Environmentally Assisted Cracking: Theory and Practice
|
Presentation Title |
Susceptibility of Manganese Bronze to SCC in Water |
Author(s) |
Olaf Manz, Milo V. Kral |
On-Site Speaker (Planned) |
Olaf Manz |
Abstract Scope |
C86300 manganese bronze (~25wt.%Zn, 3.0-7.5Al, 2.5-5.0Mn, 2.0-4.0Fe, rem. Cu) is a high strength beta brass alloy typically centrifugal or continuous cast, often for bearing applications. This alloy has recently been found to be susceptible to stress corrosion cracking (SCC) when exposed to moisture from the atmosphere and residual stresses from manufacturing. There are only a few documented cases in the literature of this and other copper-based alloys experiencing SCC by exposure to water. The present research aims to determine relationships between the SCC susceptibility in water and other aqueous environments by varying stress and small alloying additions. ‘C-ring’ samples were manufactured from C86300 and variants, following ASTM G38, then tested for SCC at varying applied stresses in de-ionized water. Optical and electron microscopy were used to perform microstructural analysis of samples to both verify the fracture mechanism and relate the observed microstructures to the collected data. |
Proceedings Inclusion? |
Planned: |
Keywords |
Copper / Nickel / Cobalt, Environmental Effects, Mechanical Properties |