The effect of thermal history on the color of oxide layers in titanium 6242 alloy

Autor: J. Foyos, M. Hahn, A. Enriquez, S. Hinkson, H. Garcia, Omar S. Es-Said, J. Ogren, E. W. Lee, J. Alcisto
Rok vydání: 2004
Předmět:
Zdroj: Engineering Failure Analysis. 11:811-816
ISSN: 1350-6307
DOI: 10.1016/j.engfailanal.2004.04.001
Popis: A study was done to examine the effects of thermal history and surface pretreatment on the color of oxide layers in Titanium 6242 alloy. Coupons of the alloy underwent three different pretreatment options prior to thermal exposure to temperatures from 371 to 760 °C with periods from 6 min up to 100 h. After exposure it was found that there was not a simple correlation between color and thermal history. Also, it was not evident after exposure that the hardness could be traced to the thermal history. However, it was clear that color did rely on pretreatment options. The abrasive treatment resulted in shades of gold with a polished look while the milder treatments produced matte hues of blue. All coupons after exposure were found to have an oxide layer thickness of no more than 400 nm.
Databáze: OpenAIRE