Effect of different parameters on uncertainty during evaluation of strength of dissimilar metal weld

Einfluss verschiedener Parameter auf die Unsicherheit während der Evaluation von Spannungen in artfremdem Schweißgut

R. Santosh, P. K. Singh, G. Das, J. Korody, S. K. Das, S. Kumar, M. Ghosh

Research output: Contribution to journalArticle

Abstract

In scanning electron microscope tensile testing was carried out to assess the mechanical properties and consequent failure characteristics of dissimilar weld consisting of low alloy steel and low nitrogen austenitic stainless steel. These transition joints find wide spread application in pressurized heavy water reactors. A number of premature failures have been reported in recent past during service exploitation of same joints. Thus, it becomes essential to identify the governing criteria resulting in such type of de-generation. In present endeavour, two types of joints were considered; one weld was fabricated by buttering with 309L stainless steel and the other one was made by buttering with IN82 Ni base alloys. From experimentation, weld strength was evaluated along with uncertainty analysis. Effect of various contributing factors over uncertainty was discussed. It was quantitatively shown that microstructural characteristics influenced more dominantly than physical parameters to the uncertainty of joint efficiency.

Original languageEnglish
Pages (from-to)845-851
Number of pages7
JournalMaterialwissenschaft und Werkstofftechnik
Volume47
Issue number9
DOIs
Publication statusPublished - 01-09-2016

Fingerprint

Dissimilar metals
Welds
weld strength
heavy water reactors
high strength steels
evaluation
austenitic stainless steels
experimentation
exploitation
metals
Heavy water reactors
stainless steels
Uncertainty analysis
electron microscopes
Stainless Steel
Tensile testing
mechanical properties
Austenitic stainless steel
High strength steel
nitrogen

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

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title = "Effect of different parameters on uncertainty during evaluation of strength of dissimilar metal weld: Einfluss verschiedener Parameter auf die Unsicherheit w{\"a}hrend der Evaluation von Spannungen in artfremdem Schwei{\ss}gut",
abstract = "In scanning electron microscope tensile testing was carried out to assess the mechanical properties and consequent failure characteristics of dissimilar weld consisting of low alloy steel and low nitrogen austenitic stainless steel. These transition joints find wide spread application in pressurized heavy water reactors. A number of premature failures have been reported in recent past during service exploitation of same joints. Thus, it becomes essential to identify the governing criteria resulting in such type of de-generation. In present endeavour, two types of joints were considered; one weld was fabricated by buttering with 309L stainless steel and the other one was made by buttering with IN82 Ni base alloys. From experimentation, weld strength was evaluated along with uncertainty analysis. Effect of various contributing factors over uncertainty was discussed. It was quantitatively shown that microstructural characteristics influenced more dominantly than physical parameters to the uncertainty of joint efficiency.",
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Effect of different parameters on uncertainty during evaluation of strength of dissimilar metal weld : Einfluss verschiedener Parameter auf die Unsicherheit während der Evaluation von Spannungen in artfremdem Schweißgut. / Santosh, R.; Singh, P. K.; Das, G.; Korody, J.; Das, S. K.; Kumar, S.; Ghosh, M.

In: Materialwissenschaft und Werkstofftechnik, Vol. 47, No. 9, 01.09.2016, p. 845-851.

Research output: Contribution to journalArticle

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