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    WEAR RESISTANT AUSTENITIC STEEL HAVING SUPERIOR MACHINABILITY AND TOUGHNESS IN WELD HEAT AFFECTED ZONES THEREOF AND METHOD FOR PRODUCING SAME
    2.
    发明公开
    WEAR RESISTANT AUSTENITIC STEEL HAVING SUPERIOR MACHINABILITY AND TOUGHNESS IN WELD HEAT AFFECTED ZONES THEREOF AND METHOD FOR PRODUCING SAME 有权
    穿韧性和机械加工焊接热影响地区的奥氏体不锈钢出色，方法及其生产

    公开(公告)号：EP2799581A1

    公开(公告)日：2014-11-05

    申请号：EP12862011.9

    申请日：2012-12-27

    申请人： Posco

    发明人： LEE, Soon-Gi ,  CHOI, Jong-Kyo ,  NOH, Hee-Goon ,  LEE, Hong-Ju ,  SUH, In-Shik ,  PARK, In-Gyu

    IPC分类号： C22C38/04 ,  C21D8/00 ,  C21D9/46 ,  C22C38/38

    摘要： Provided are a wear resistant austenitic steel having superior machinability and toughness in weld heat affected zones thereof and a method for producing same, the austenitic steel comprising, in weight %, 15 to 25% of manganese (Mn), 0.8 to 1.8% of carbon(C), copper (Cu) that satisfies 0.7C-0.56 (%) ≤ Cu ≤ 5%, the remainder being Fe and other inevitable impurities, the Charpy impact value of the weld heat affected zones at -40 °C being 100J or higher. According to the present invention, austenitic steel having superior machinability is provided in which carbide generation after welding in the weld heat affected zones is inhibited in order to prevent the toughness of the weld heat affected zones from being degraded, and corrosion resistance is improved to enable the steel to be used over a long period of time in a corrosive environment.

    NON-HEAT TREATED WIRE ROD WITH EXCELLENT WIRE DRAWABILITY AND IMPACT TOUGHNESS AND MANUFACTURING METHOD THEREFOR
    3.
    发明公开
    NON-HEAT TREATED WIRE ROD WITH EXCELLENT WIRE DRAWABILITY AND IMPACT TOUGHNESS AND MANUFACTURING METHOD THEREFOR 审中-公开

    公开(公告)号：EP3964601A1

    公开(公告)日：2022-03-09

    申请号：EP20921609.2

    申请日：2020-02-24

    申请人： POSCO

    发明人： MUN, Dong Jun ,  PARK, In-Gyu ,  MIN, Se Hong

    IPC分类号： C22C38/38 ,  C22C38/24 ,  C22C38/28 ,  C22C38/00 ,  C21D8/06 ,  C21D9/68 ,  B21B1/16 ,  B21B37/74

    摘要： Provided are a non-quenched and tempered wire rod having excellent drawability and impact toughness suitable for materials for automobiles or mechanical parts and a method of manufacturing the same.
    According to an embodiment of the present disclosure, the non-quenched and tempered wire rod includes, in percent by weight (wt%), 0.05 to 0.35% of carbon (C), 0.05 to 0.5% of silicon (Si), 0.5 to 2.0% of manganese (Mn), 1.0% or less of chromium (Cr), 0.03% or less of phosphorus (P), 0.03% or less of sulfur (S), 0.01 to 0.07% of soluble aluminum (sol.Al), 0.01% or less of nitrogen (N), at least one of 0.1% or less of niobium (Nb), 0.5% or less of vanadium (V), and 0.1% or less of titanium (Ti), and the remainder of iron (Fe) and inevitable impurities, and includes a ferrite-pearlite layered structure, as a microstructure, in a rolling direction.

    HIGH STRENGTH AUSTENITIC-BASED STEEL WITH REMARKABLE TOUGHNESS OF WELDING HEAT-AFFECTED ZONE AND PREPARATION METHOD THEREFOR
    5.
    发明公开
    HIGH STRENGTH AUSTENITIC-BASED STEEL WITH REMARKABLE TOUGHNESS OF WELDING HEAT-AFFECTED ZONE AND PREPARATION METHOD THEREFOR 有权
    根据上述制造焊接，加热区非凡的实力和工艺高强度钢奥氏体

    公开(公告)号：EP2940173A1

    公开(公告)日：2015-11-04

    申请号：EP13867247.2

    申请日：2013-12-24

    申请人： Posco

    发明人： LEE, Hak-Cheol ,  SUH, In-Shik ,  LEE, Soon-Gi ,  PARK, In-Gyu ,  KIM, Yong-Jin ,  LEE, Hong-Ju

    IPC分类号： C22C38/00 ,  C22C38/04 ,  C21D8/00 ,  C22C38/38

    摘要： The present invention relates to a high strength austenitic-based steel with remarkable toughness of a welding heat-affected zone and a preparation method therefor. One embodiment of the present invention provides: a high strength austenitic-based steel with remarkable toughness of a welding heat-affected zone, comprising 0.8-1.5 wt% of C, 15-22 wt% of Mn, 5 wt% or less of Cr (except 0), and the balance of Fe and other inevitable impurities, and further comprising at least one of the following (a) and (b), wherein the microstructure of a welding heat-affected zone comprises 90 % or more of austenite by volume fraction; and a preparation method therefor. (a) Mo: 0.1-1 % and B: 0.001-0.02 % (b) Ti: 0.01-0.3 % and N: 0.003-0.1 %

    摘要翻译： 本发明涉及到基于奥氏体系高强度钢的焊接热影响区显着的韧性和用于其的制备方法。 本发明的一个实施例提供：与焊接热影响区显着的韧性的高强度奥氏体基于-钢，Cr的含有C：0.8-1.5％（重量），锰的15至22重量％，5重量％或更少 （0除外），以及Fe和其它不可避免的杂质，并且进一步包含至少一个平衡的下述（a）和（b），worin焊接热影响区的微观结构由包含90％以上的奥氏体 体积分数; 及其制备方法为此。 （A）的Mo：0.1-1％和B：0.001〜0.02％（b）中的Ti：0.01〜0.3％和N：0.003〜0.1％