Detail publikace

The Use of Microstructural Analysis for the Evaluation of Quality of Double-Wall Pipes

KLAKURKOVÁ, L. JULIŠ, M. GEJDOŠ, P. HORYNOVÁ, M.

Originální název

The Use of Microstructural Analysis for the Evaluation of Quality of Double-Wall Pipes

Typ

abstrakt

Jazyk

angličtina

Originální abstrakt

This contribution is based on case studies concerning failure of double-wall pipes due to several factors. Series of double wall-pipes from different suppliers were studied using light and electron microscopy in order to reveal defects which led to the failure of each set of the pipes. Pipes, made of combination of steel and copper were analysed in the initial state and after heat treatment. Heat treatment, was performed by the suppliers, not further specified, and varied between suppliers [1, 2]. Metallographic analysis revealed unsuitable microstructure of steel layers and heterogeneity in Cu layer. More detailed analysis revealed precipitation of Cu-based phase on the Cu-steel interface resulting from heat treatment process, but for one set of tubes, precipitates were observed even in the initial state, probably due to higher temperatures used during the fabrication process, see Fig. 1. Based on the findings, optimization of heat treatment was suggested and one of the suppliers was recommended.

Klíčová slova

heat treatment; steel; copper;, light microscopy; electron microscopy

Autoři

KLAKURKOVÁ, L.; JULIŠ, M.; GEJDOŠ, P.; HORYNOVÁ, M.

Vydáno

19. 4. 2016

Nakladatel

Faculty of Metallurgy Technical University of Košice

Místo

Košice

ISBN

978-80-553-2547-7

Kniha

Metallography ´16

Číslo edice

1

Strany od

91

Strany do

91

Strany počet

1

BibTex

@misc{BUT124212,
  author="Lenka {Klakurková} and Martin {Juliš} and Pavel {Gejdoš} and Miroslava {Horynová}",
  title="The Use of Microstructural Analysis for the Evaluation of Quality of Double-Wall Pipes",
  booktitle="Metallography ´16",
  year="2016",
  edition="1",
  pages="91--91",
  publisher="Faculty of Metallurgy Technical University of Košice",
  address="Košice",
  isbn="978-80-553-2547-7",
  note="abstract"
}