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ASM Failure Analysis Case Histories

Handbook of Case Histories in Failure Analysis

Edited by
Khlefa A. Esaklul
Khlefa A. Esaklul
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ASM International
Volume
1
ISBN electronic:
978-1-62708-214-3
Publication date:
1992
Book Chapter

Intergranular Cracking and Failure of Stainless Steel Vanes from a Closed, Riveted Impeller

By
Harry E. Ebert
Harry E. Ebert
Dresser-Rand
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Published:
1992
Page range:
278 - 283

Abstract

Two Z-shape impeller vanes failed. The vane material was 14-hard type 301 stainless steel. The vanes were of two-piece construction, with a longitudinal weld. Analyses indicated that the vanes had not been solution annealed after welding, leaving the heat-affected zone above the welds in a highly sensitized state. The sensitized material lost corrosion resistance, became embrittled along the grain boundaries, and finally failed by intergranular cracking. Use of type 410 martensitic stainless steel was recommended.

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Harry E. Ebert, 1992. "Intergranular Cracking and Failure of Stainless Steel Vanes from a Closed, Riveted Impeller", Handbook of Case Histories in Failure Analysis, Khlefa A. Esaklul

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