Effect of alloying elements on environmental cracking of Ni-base alloys in sour gas environment

Conference · Thu Dec 31 23:00:00 EST 1987

OSTI ID:5695565

Takaoka, T; Ishizawa, Y; Masamura, K; Misao, H

Ni-Cr-Mo alloys may be damaged by stress corrosion cracking (SCC) in high temperature sour gas environments which contain acid and elemental sulfur. To evaluate the effects of alloying elements in Ni base alloys on the cracking, SCC resistance of various alloys was examined in autoclave environments simulating sour gas wells with acetic acid and elemental sulfur. Further, the susceptibility to hydrogen embrittlement (HE) of alloys was measured by SSRT test. Results indicated that high amount of Mo remarkably increased SCC resistance and HE as also affected by Ni, Mo and Ti.

• OSTI ID: 5695565
• Report Number(s): CONF-880314--
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030300* -- Natural Gas-- Drilling
Production
& Processing
36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
360105 -- Metals & Alloys-- Corrosion & Erosion
ACETIC ACID
ALLOYS
CARBOXYLIC ACIDS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CORROSION
CORROSION RESISTANCE
CORROSION RESISTANT ALLOYS
CORROSIVE EFFECTS
CRACKS
ELEMENTS
EMBRITTLEMENT
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HYDROGEN EMBRITTLEMENT
METALLURGICAL EFFECTS
MOLYBDENUM ALLOYS
MONOCARBOXYLIC ACIDS
NATURAL GAS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NONMETALS
ORGANIC ACIDS
ORGANIC COMPOUNDS
STRESS CORROSION
SULFUR
SULFUR CONTENT