Correlation of the high-temperature corrosion behavior of structural alloys in coal conversion environments with the components of the alloys and of the corrosive environments. Final report, February 29, 1980

Technical Report · Fri Feb 29 04:00:00 EST 1980

OSTI ID:5281065

Wright, I G; Dodds, R O; Palmer, R B; Link, H A; Merz, W E; Beatty, G H

This program was established at Battelle's Columbus Laboratories to provide information on the effects of a wide range of simulated coal gasifier atmospheres on the high-temperature corrosion behavior of a small number of alloys, to supplement existing alloy screening programs in this area. Four alloys: Inconel 671; AISI 310; Incoloy 800 and USS 18-18-2, were exposed in a series of statistically-designed experiments for times up to 1000 h in simulated coal gasifier atmospheres at total pressures of 500, 1000 and 1500 psig, and at temperatures of 1382, 1600 and 1800/sup 0/F. Some data were also generated for alloys GE 1541 and Sandvik 253 MA. The progress of corrosion was evaluated by standardized metallographic techniques, with effects on mechanical properties assessed by post-test tensile tests. The data generated were statistically analyzed to determine trends. The results indicated that increasing temperature exerted a significant effect by increasing the extent of corrosion of Inconel 671, Incoloy 800 and USS 18-18-2, whereas increasing total pressure caused a significant decrease in the extent of corrosion of Incoloy 800 and AISI 310. Temperature was the most important variable affecting the tensile strength of the corroded specimens; the ultimate tensile strength of Inconel 671, AISI 310 and USS 18-18-2 increased (relative to aged specimens) with increasing temperature, suggesting that some corrosion morphologies may not be significantly detrimental. Decreasing total pressure from 1500 to 500 psig exerted a significant effect on the UTS of USS 18-18-2 only, causing a decrease.

• Research Organization: Battelle Columbus Labs., OH (USA)
• DOE Contract Number: AT02-76CH92092
• OSTI ID: 5281065
• Report Number(s): BMI-2059
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010404* -- Coal
Lignite
& Peat-- Gasification
36 MATERIALS SCIENCE
360105 -- Metals & Alloys-- Corrosion & Erosion
ALLOYS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
COAL GASIFICATION
COAL GASIFICATION PLANTS
CORROSION
CORROSION RESISTANCE
CORROSION RESISTANT ALLOYS
CORROSIVE EFFECTS
DATA
DATA FORMS
DIAGRAMS
EXPERIMENTAL DATA
GASIFICATION
GRAPHS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INCOLOY 800
INCOLOY ALLOYS
INCONEL 671
INDUSTRIAL PLANTS
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MATERIALS TESTING
MECHANICAL PROPERTIES
METALLOGRAPHY
NICKEL ALLOYS
NICKEL BASE ALLOYS
NUMERICAL DATA
PHASE DIAGRAMS
PRESSURE DEPENDENCE
SIMULATION
STAINLESS STEEL-310
STAINLESS STEELS
STEELS
TABLES
TEMPERATURE DEPENDENCE
TESTING
THERMOCHEMICAL PROCESSES