Effect of Matrix-Microstructure on Embrittlement Caused by High Carbon Martensite Island.

• MIMURA Hiroshi

  横浜国立大学 現在, 三菱電機

• NAGAI Hironori

  横浜国立大学 (大学院) 現在, ヤマハ

• ISHIKAWA Kouji

  横浜国立大学 (大学院) 現在, ヤマハ

Bibliographic Information

Other Title

• 高炭素マルテンサイトの島による脆化に及ぼす微視組織の影響
• コウ タンソ マルテンサイト ノ シマ ニヨル ゼイカ ニ オヨボス ビシ ソ

Abstract

For various kinds of matrix-microstructure, embrittlement by high carbon martensite islands (M*) was evaluated as the difference of the transition temperatures between two specimens; one specimen holding M* and the other containing no M*. The transition temperatures were measured for CTOD test, the standard Charpy test and the press notched Charpy test. The results are summarized as follows.<br>(1) The embrittlement by M* in CTOD depends on the matrix-microstructure through the M* size. Lower bainite has smaller M* size and less susceptibility to M* embrittlement than other microstructures.<br>(2) The embrittlement by M* in CTOD was remarkable in comparison with those of the other tests for the mixed microstructure of ferrite and upper bainite, while all test gave the similar embrittlement for specimens of ferrite-pearlite or martensite, i.e. the uniform microstructure.

Journal

• Journal of High Pressure Institute of Japan

  Journal of High Pressure Institute of Japan 34 (5), 284-291, 1996

  HIGH PRESSURE INSTITUTE OF JAPN(HPI)

Details

• CRID: 1390282679592696192
• NII Article ID: 130004092072
• NII Article ID: 10002019957
• NII Book ID: AN00011762
• DOI: 10.11181/hpi1972.34.284
• ISSN: 13479598
• ISSN: 03870154
• NDL BIB ID: 4038165
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4038165
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • CiNii Articles
• Abstract License Flag: Disallowed