Evaluation of high chromium overlays to protect less alloyed substrates from corrosion in a coal gasification atmosphere. Quarterly report, December 1, 1977--February 28, 1978

Technical Report · Sun Jan 01 04:00:00 EST 1978

OSTI ID:6628260

Sadowski, E P

One-half of the welding is complete and testing started on this program to produce overlays with corrosion resistance to coal gasification atmospheres at 1800/sup 0/F. In the last quarter, single and double layer overlays were deposited with INCONEL Filler Metal 72 (44 percent Cr) on 304L, 310 and INCOLOY alloy 800H with the submerged-arc (SAW) and hot wire gas tungsten arc processes (GTAW-HW), and on 304L with the gas metal arc process. In addition, the experimental R139 filler metal (31Cr-3Al) was overlaid on 304L with the SAW process. Percent dilution of the base plate was measured and percent recovery of the major alloying elements were calculated for the AWS-ER309 overlays on 304L for all weld processes and for the R139 overlaid on 304L by the SAW process. Pre-exposure testing of the AWS-ER309 overlays on 304L was completed and stress rupture testing started. The tests consisted of hardness surveys, bend and tensile tests, bulk chemical analysis of the overlay and microprobe analysis for the distribution of the major alloying elements from the outside edge of the overlay through the thickness of the base plate. Inspection of the weldments was by dy-check and examination of cut slices.

• Research Organization: International Nickel Co., Inc., Suffern, NY (USA). INCO Research and Development Center
• OSTI ID: 6628260
• Report Number(s): FE-2621-2
• 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 ANALYSIS
CHEMICAL COMPOSITION
CHROMIUM ALLOYS
CHROMIUM BASE ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
COAL GASIFICATION PLANTS
CORROSION PROTECTION
CORROSION RESISTANCE
CORROSION RESISTANT ALLOYS
CORROSIVE EFFECTS
DEPOSITION
ELECTRON MICROPROBE ANALYSIS
ELEMENTS
FABRICATION
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
INCOLOY 800
INCOLOY ALLOYS
INCONEL ALLOYS
INDUSTRIAL PLANTS
INSPECTION
IRON ALLOYS
IRON BASE ALLOYS
JOINING
JOINTS
MATERIALS
MECHANICAL PROPERTIES
METALLOGRAPHY
METALS
MICROANALYSIS
NICKEL ALLOYS
NICKEL BASE ALLOYS
STAINLESS STEEL-304L
STAINLESS STEEL-310
STAINLESS STEELS
STEELS
SURFACE COATING
WELDED JOINTS
WELDING