Invention Grant
- Patent Title: Abrasion-resistant steel plate and method for manufacturing the same
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Application No.: US15114889Application Date: 2015-01-26
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Publication No.: US10662493B2Publication Date: 2020-05-26
- Inventor: Masao Yuga , Shinichi Miura , Akio Ohmori
- Applicant: JFE STEEL CORPORATION
- Applicant Address: JP Tokyo
- Assignee: JFE STEEL CORPORATION
- Current Assignee: JFE STEEL CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Oliff PLC
- Priority: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@37ababe8
- International Application: PCT/JP2015/000332 WO 20150126
- International Announcement: WO2015/115086 WO 20150806
- Main IPC: C21D9/46
- IPC: C21D9/46 ; C22C38/38 ; C22C38/58 ; C21D8/02 ; C21D1/18 ; C22C38/00 ; C22C38/02 ; C22C38/04 ; C22C38/06 ; C22C38/20 ; C22C38/22 ; C22C38/24 ; C22C38/26 ; C22C38/28 ; C22C38/32 ; C22C38/42 ; C22C38/44 ; C22C38/46 ; C22C38/48 ; C22C38/50 ; C22C38/54

Abstract:
An abrasion resistant steel plate having excellent low-temperature toughness and excellent cracking resistance in a portion which has been heated to a temperature range in which low-temperature temper embrittlement occurs and a method for manufacturing the steel plate. The steel plate includes a microstructure at positions located at ¼ of the thickness and at ¾ of the thickness including a martensite single phase microstructure having an average prior austenaite grain diameter in the range of 20 μm to 60 μm, or a mixed microstructure of martensite and bainite having a proportion of martensite-austenite constituent of less than 5% in terms of area ratio with respect to the whole microstructure.
Public/Granted literature
- US20160348208A1 ABRASION-RESISTANT STEEL PLATE AND METHOD FOR MANUFACTURING THE SAME Public/Granted day:2016-12-01
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