Title:
靭性及び耐切断割れ性に優れた高硬度耐摩耗鋼、並びにその製造方法
Document Type and Number:
Japanese Patent JP6691967
Kind Code:
B2
Abstract:
The present invention relates to a high hardness abrasion resistant steel having excellent toughness and cutting crack resistance, and a method for manufacturing the same. A high hardness abrasion resistant steel according to one aspect of the present invention has a composition containing, by weight ratio, 2.1 to 4.0% of Mn, 0.15 to 0.2% of C, 0.02 to 0.5% of Si, 0.2 to 0.7% of Cr, the remainder being Fe and other unavoidable impurities, has a microstructure in which the prior austenite grain size is 25 µm or less and martensite is the main structure, and satisfies the condition where Ac3-Ac1 is 100°C or less.
Inventors:
Lee, Il-Chol
Kim, Yong-Jin
Kim, Sung-kyu
Gun, Sun-Doc
Lee, Eun-Hee
Kim, Yong-Jin
Kim, Sung-kyu
Gun, Sun-Doc
Lee, Eun-Hee
Application Number:
JP2018530497A
Publication Date:
May 13, 2020
Filing Date:
November 22, 2016
Export Citation:
Assignee:
POSCO
International Classes:
C22C38/00; C21D8/02; C22C38/38
Domestic Patent References:
| JP2004300474A | ||||
| JP2007146237A | ||||
| JP2015200015A | ||||
| JP60009824A |
Foreign References:
| KR20130096213A |
Attorney, Agent or Firm:
Kyosei International Patent Office