Nickel-based alloy having high stress rupture life

US6605164B2 · kind B2 · utility

Assignee

• ATI PROPERTIES LLC · US

Inventors

• Richard L. Kennedy · Monroe, US
• Wei Cao · Shanghai, CN

Key dates

• Filing date: Apr 30, 2001
• Grant date: Aug 12, 2003
• Expiry date: Apr 30, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C22C30/00
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A nickel-based fine grained alloy consisting essentially of 40-55 wt % Ni, 14.5-21 wt % Cr, 2.5-5.5 wt % Nb+Ta, up to 3.3 wt % Mo, 0.65-2.00 wt % Ti, 0.10-0.8 wt % Al, up to 0.35 wt % Mn, up to 0.07 wt % C, up to 0.015 wt % S, up to 0.35 wt % Si, at least 0.016 wt % P, from 0.003 % to 0.030 wt % B, and the balance Fe and incidental impurities, has a high stress rupture life.