TEMPER EMBRITTLEMENT AND PINE CONE LIKE FRACTURE SURFACE OF 5. 5% Ni CRYOGENIC STEELS.

Masato Murakami, Koji Shibata, Kotobu Nagai, Toshio Fujita

Research output: Contribution to journalArticle

Abstract

Pine cone is the surface produced by fracture along P-segregated martensite/austenite interfaces which form at prior austenitic grain boundaries and is caused by reverted austenite at the grain boundaries. Intercritical tempering promotes austenite formation thereby enhances the irregularity of the grain boundary and reduces the fraction of intergranular fracture. The retained austenite at the grain boundaries transforms to martensite during fracture.

Original languageEnglish
Pages (from-to)808-814
Number of pages7
JournalTransactions of the Iron and Steel Institute of Japan
Volume23
Issue number10
DOIs
Publication statusPublished - 1983 Jan 1

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ASJC Scopus subject areas

  • Engineering(all)

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