High-resolution diffraction for residual stress determination in the NiCrMoV wheel of an axial compressor for a heavy-duty gas turbine

M. Rogante, G. Török, G. F. Ceschini, L. Tognarelli, I. Füzesy, L. Rosta

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The wheel of an axial compressor for a heavy-duty gas turbine has been investigated for residual stresses (RS) evaluation of the teeth-section where SANS measurements have previously been performed. Such a component can contain internal RS, either due to the manufacturing process, or to the operating cycles fatigue. The constitutive material is a NiCrMoV steel to ASTM A 471 (type 2) norms (equivalent to B50A420B10); this material is usually adopted in the manufacturing of forged components for gas turbines. Internal radial and hoop RS have been determined, whose values are under the limit of 200 kPa. Hoop RS, in general, resulted in higher value than the radial ones. The present experiment represents a particularly important step in the RS determination for gas turbine components, since the measurements reveal that the fatigue of the wheel is also a lifetime limiting factor although, in the same technological field, the available data in the actual neutron techniques literature mainly concern turbine buckets.

Original languageEnglish
Pages (from-to)e479-e481
JournalPhysica B: Condensed Matter
Volume350
Issue number1-3 SUPPL. 1
DOIs
Publication statusPublished - Jul 15 2004

Keywords

  • Fatigue
  • Gas turbine
  • Neutron diffraction
  • NiCrMoV
  • Residual stress

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'High-resolution diffraction for residual stress determination in the NiCrMoV wheel of an axial compressor for a heavy-duty gas turbine'. Together they form a unique fingerprint.

  • Cite this