Effects of Si on Tensile Properties Associated with Deformation-Induced ε-Martensitic Transformation in High Mn Austenitic Alloys

• Koyama Motomichi

  Kyushu University

• Sawaguchi Takahiro

  National Institute for Materials Science

• Tsuzaki Kaneaki

  Kyushu University National Institute for Materials Science

書誌事項

タイトル別名

• Effects of Si on Tensile Properties Associated with Deformation-Induced ε-Martensitic Transformation in High Mn Austenitic Alloys

抄録

We investigated the effect of Si on the tensile properties of Fe-33Mn, Fe-33Mn-4Si, and Fe-33Mn-6Si austenitic alloys (mass%) at 273, 294, 323, and 423 K. The Si addition promoted the deformation-induced ε-martensitic transformation, thereby enhancing the work-hardening capacity. In terms of Considère’s criterion, the enhanced work-hardening capacity can improve uniform elongation. However, the Si addition simultaneously promoted brittle cracking associated with ε-martensite, tending toward decreasing elongation. As a result of the ambivalent roles of Si related to ε-martensite, the elongation–strength balance was improved by the addition of 4%Si, but was deteriorated when the Si content increased to 6%. As an additional effect, the Si addition changed the microvoid-formation behavior, resulting in decreasing local elongations.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 56 (6), 819-825, 2015

  公益社団法人 日本金属学会

キーワード

• high manganese steel
• austenitic steel
• ε-martensitic transformation
• work hardening
• brittle fracture

詳細情報

• CRID: 1390282679229412096
• NII論文ID: 40020473927
• NII論文ID: 130005072142
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.m2015042
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 026412776
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I026412776
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/56/6/56_M2015042/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可