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© Riley Power Inc., 2012 www.babcockpower.com Recent Experience in Dissimilar Metal Weld Failures by Gary R. Wood Senior Metallurgical Engineer American Electric Power Joyce M. Khoury Senior Metallurgist a Babcock Power Inc. company (formerly DB Riley, Inc.) James P. King Design Manager a Babcock Power Inc. company (formerly DB Riley, Inc.) Presented at International Conference on Boiler Tube Failures in Fossil Plants Sonsored by EPRI and TVA November 11-13, 1997 Nashville, Tennessee Technical Publication RST-148 RILEY POWER INC. RILEY POWER INC.

Recent Experience in Dissimilar Metal Weld Failures...290 280 270 260 250 240 230 220 210 200 190 180 170 160 150 140 130 Fe-Base Weld Metal Ni-Base Weld Meta] HAZ 39 Larson-Miller

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Page 1: Recent Experience in Dissimilar Metal Weld Failures...290 280 270 260 250 240 230 220 210 200 190 180 170 160 150 140 130 Fe-Base Weld Metal Ni-Base Weld Meta] HAZ 39 Larson-Miller

© Riley Power Inc., 2012 www.babcockpower.com

Recent Experience in Dissimilar Metal Weld Failures

by

Gary R. WoodSenior Metallurgical Engineer

American Electric Power

Joyce M. KhourySenior Metallurgist

a Babcock Power Inc. company(formerly DB Riley, Inc.)

James P. KingDesign Manager

a Babcock Power Inc. company(formerly DB Riley, Inc.)

Presented at International Conference on Boiler Tube Failures in Fossil Plants

Sonsored by EPRI and TVANovember 11-13, 1997Nashville, Tennessee

Technical Publ icat ion

RST-148

RILEY POWER INC.

RILEY POWER INC.

Page 2: Recent Experience in Dissimilar Metal Weld Failures...290 280 270 260 250 240 230 220 210 200 190 180 170 160 150 140 130 Fe-Base Weld Metal Ni-Base Weld Meta] HAZ 39 Larson-Miller
Page 3: Recent Experience in Dissimilar Metal Weld Failures...290 280 270 260 250 240 230 220 210 200 190 180 170 160 150 140 130 Fe-Base Weld Metal Ni-Base Weld Meta] HAZ 39 Larson-Miller
Page 4: Recent Experience in Dissimilar Metal Weld Failures...290 280 270 260 250 240 230 220 210 200 190 180 170 160 150 140 130 Fe-Base Weld Metal Ni-Base Weld Meta] HAZ 39 Larson-Miller
Page 5: Recent Experience in Dissimilar Metal Weld Failures...290 280 270 260 250 240 230 220 210 200 190 180 170 160 150 140 130 Fe-Base Weld Metal Ni-Base Weld Meta] HAZ 39 Larson-Miller
Page 6: Recent Experience in Dissimilar Metal Weld Failures...290 280 270 260 250 240 230 220 210 200 190 180 170 160 150 140 130 Fe-Base Weld Metal Ni-Base Weld Meta] HAZ 39 Larson-Miller
Page 7: Recent Experience in Dissimilar Metal Weld Failures...290 280 270 260 250 240 230 220 210 200 190 180 170 160 150 140 130 Fe-Base Weld Metal Ni-Base Weld Meta] HAZ 39 Larson-Miller
Page 8: Recent Experience in Dissimilar Metal Weld Failures...290 280 270 260 250 240 230 220 210 200 190 180 170 160 150 140 130 Fe-Base Weld Metal Ni-Base Weld Meta] HAZ 39 Larson-Miller
Page 9: Recent Experience in Dissimilar Metal Weld Failures...290 280 270 260 250 240 230 220 210 200 190 180 170 160 150 140 130 Fe-Base Weld Metal Ni-Base Weld Meta] HAZ 39 Larson-Miller
Page 10: Recent Experience in Dissimilar Metal Weld Failures...290 280 270 260 250 240 230 220 210 200 190 180 170 160 150 140 130 Fe-Base Weld Metal Ni-Base Weld Meta] HAZ 39 Larson-Miller
Page 11: Recent Experience in Dissimilar Metal Weld Failures...290 280 270 260 250 240 230 220 210 200 190 180 170 160 150 140 130 Fe-Base Weld Metal Ni-Base Weld Meta] HAZ 39 Larson-Miller
Page 12: Recent Experience in Dissimilar Metal Weld Failures...290 280 270 260 250 240 230 220 210 200 190 180 170 160 150 140 130 Fe-Base Weld Metal Ni-Base Weld Meta] HAZ 39 Larson-Miller