Analysis of Corrosion Fatigue Cracking in Steam Turbine Blades

An abstract describes a failure analysis of 17-4PH steel blades from a low-pressure steam turbine rotor. The research, conducted by Yuwei Wei of the Guangxi Special Equipment Inspection Institute, used macro analysis, mechanical testing, metallographic examination, SEM, and X-ray fluorescence spectrum analysis (XRF). The results indicate blade cracks were caused by corrosion fatigue initiated by Cl- and K+ ions in the steam environment.

Use Cases

• Modeling corrosion fatigue crack growth based on stress state and pit geometry described in the abstract.
• Analyzing the relationship between corrosion pit depth/width and the threshold nominal stress range for crack elongation.
• Studying the autocatalytic process of block cell formation from ion reactions with turbine blades.
• Investigating the combined effect of erosion from steam condensate and complex alternating stress on component failure.

Strengths

• Analysis is based on multiple examination techniques: macro analysis, mechanical examination, metallographic examination, SEM, and XRF.
• The abstract provides a specific material (17-4PH steel) and component (low-pressure steam turbine rotor blade) under study.

Limitations

• Row count and column-level documentation are absent; field semantics must be inferred after download.
• Last update date is unknown; freshness unverified.
• Data may reflect a specific case study bias inherent to paperswithcode.

Provenance

Source

Yuwei Wei, Guangxi Special Equipment Inspection Institute

Collection Method

Failure analysis using macro analysis, mechanical examination, metallographic examination, SEM, and XRF.