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METAL MATERIAL AND PROCESSING/TREATMENT METHOD

外国特許コード F160008754
整理番号 (S2014-1289-N0)
掲載日 2016年6月2日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2015JP074400
国際公開番号 WO 2016031958
国際出願日 平成27年8月28日(2015.8.28)
国際公開日 平成28年3月3日(2016.3.3)
優先権データ
  • 特願2014-174117 (2014.8.28) JP
発明の名称 (英語) METAL MATERIAL AND PROCESSING/TREATMENT METHOD
発明の概要(英語) [Problem] To provide a metal material exhibiting high strength and ductility, using a simple strong rolling method and heat treatment, without using a complex process, and to provide a treatment method therefor. [Solution] This metal material is formed such that, in the fine grain structure formed as a result of strong strain processing performed by simple strong rolling, a low-angle lamellar structure serves as a base, group structures formed by aggregated deformation twins are dispersed, and the peripheries of these dispersed deformation-twin group structures are surrounded by a plurality of shear bands. In other words, this metal material comprises a hetero-nanostructure having, as a main constituent component, a deformation-induced microstructure. This processing/heat treatment method includes: a simple strong rolling step in which stable austenitic steel or ferritic/austenitic two-phase stainless steel is subjected to cold rolling at 80% or more; and a heat treatment step in which the structure formed as a result of the simple strong rolling step is subjected to combined annealing/ageing treatment under conditions which do not induce recrystallization.
  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • NATIONAL UNIVERSITY CORPORATION TOYOHASHI UNIVERSITY OF TECHNOLOGY
  • 発明者(英語)
  • MIURA HIROMI
国際特許分類(IPC)
指定国 National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JP KE KG KN KP KR KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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