Strengthening domains in a Ni–21Cr–17Mo alloy

Autor: Lee M. Pike, Charlie R. Brooks, Y. L. Lu, Dwaine L. Klarstrom, Peter K. Liaw
Rok vydání: 2007
Předmět:
Zdroj: Scripta Materialia. 56:121-124
ISSN: 1359-6462
DOI: 10.1016/j.scriptamat.2006.09.011
Popis: The yield strength of a newly developed commercial Ni–21Cr–17Mo (wt.%) alloy (HASTELLOY® C-22HS alloy) can be approximately doubled over a temperature range up to about 600 °C by subjecting the alloy to an age-hardening heat treatment. It is found that the long-range-ordered (LRO) Ni2(Cr, Mo) domains in the age-hardened alloy are responsible for the strengthening. Widespread lamellae of 2–100 nm thickness are observed in samples tensile-tested at both room temperature and 595 °C, and are confirmed to be twins.
Databáze: OpenAIRE