Accession Number:

ADA172488

Title:

Stress State and Hydrogen-Related Fracture.

Descriptive Note:

Technical rept.,

Corporate Author:

PENNSYLVANIA STATE UNIV UNIVERSITY PARK DEPT OF MATERIALS SCIENCE AND ENGINEERING

Personal Author(s):

• Koss,D. A.
• Yunchang,Fan

Report Date:

1986-09-01

Pagination or Media Count:

36.0

Abstract:

The influence of externally imposed stress state on the hydrogen-assisted fracture of metals is reviewed. Independent of any transport process which may result in hydrogen accumulation, the effects of stress state are to accelerate the hydrogen-related fracture processes with increasing triaxiality of stress state. The magnitude of the intrinsic sensitivity of hydrogen embrittlement to stress state effect depends on the mechanism of embrittlement. The behavior of selected hydride as well as non-hydride forming alloy systems is reviewed. Keywords Stress states Hydrogen embrittlement Fracture mechanisms Titanium alloys Zircaloy-Z Steels Nickel alloys Hydride forming alloys.

Descriptors:

• *STRESSES
• *ALLOYS
• *FRACTURE(MECHANICS)
• *HYDROGEN EMBRITTLEMENT
• METALS
• HYDRIDES
• EMBRITTLEMENT
• STEEL
• HYDROGEN
• TRANSPORT PROPERTIES
• NICKEL ALLOYS
• ACCUMULATION
• TITANIUM ALLOYS
• CARBON STEELS
• ZIRCONIUM ALLOYS

Subject Categories:

• Metallurgy and Metallography
• Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE