OBSERVATION OF BOILER ELEMENTS BY NONDESTRUCTIVE METALLOGRAPHY

Spheroidization is the most important structural change produced in ferritic steels by time and temperature. This phenomenon is related to the damage accumulated in the material under service conditions. The presence of spheroidized carbides, after a few hours of service, in steels that originally presented a perlite structure, is a strong indication that the working temperature is above design requirements. Examples are given of the utilization of the replica technique in the inspection of water tubes in a marine boiler and reheater tubes in two power plant boilers. Results are discussed.

• Supplemental Notes:
  • First International Conference on Pressure Vessel Technology, Delft, Netherlands. Sept 29-Oct 2, 1969.
• Corporate Authors:

  American Society of Mechanical Engineers

  Two Park Avenue
  New York, NY  United States  10016-5990
• Authors:
  • Vassallo, D
  • Fritzsche, J
  • Sarrate, M
  • Wortman, O
• Conference:
  • First International Conference on Pressure Vessel Technology, Delft, Netherlands. Sept 29-Oct 2, 1969.
• Publication Date: 1969-9-29

Media Info

• Features: References;
• Pagination: p. 451-461
• Serial:
  • Issue Number: Pt2

Subject/Index Terms

• TRT Terms: Boiler tubes; Boilers; Inspection; Nondestructive tests
• Old TRIS Terms: Boiler inspection
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00016635
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Aug 20 1973 12:00AM