Effects of Section Thickness and Orientation on Creep-Rupture Properties of Two Advanced Single Crystal Alloys Allison Gas Turbine Div. General Motors Corporation

Format:

Conference/Event

Author/Creator:

Doner, Mehmet, author.

Conference Name:

Aerospace Technology Conference & Exposition (1985-10-14 : Long Beach, California, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1985

Summary:

Effects of specimen thickness and orientation on creep and stress-rupture properties of two advanced single crystal alloys were investigated. The alloys were CMSX-3, a derivative of Mar-M247, and a new single crystal alloy, designated as Alloy X, which is based on modification of IN-792 composition. Section thickness effects were ascertained utilizing four different specimen geometries, including 0.250 in. diameter bars and 0.020 in. thick specimens. The stress-rupture lives of both materials degraded with section thickness at stress levels less than 40,000 lb/in.2. The life degradation was approximately 3X at 20,000 lb/inches2. Investigations into the effects of orientation on stress-rupture properties indicated that for Alloy X the <110> oriented specimens suffered a loss of approximately 3X in stress-rupture lives compared to <001> oriented specimens. On the other hand, essentially no difference was observed in the stress-rupture lives of <001> and <110> oriented specimens of CMSX-3 alloy. Time for 1% creep was essentially unaffected by section thickness or orientation in both alloys

Notes:

Vendor supplied data

Publisher Number:

851785

Access Restriction:

Restricted for use by site license