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High-strength ferritic heat-resistant steel with excellent high-temperature creep strength and room temperature toughness

机译：具有优异的高温蠕变强度和室温韧性的高强度铁素体耐热钢

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摘要

PROBLEM TO BE SOLVED: To provide a ferritic heat resistant steel having a high strength and toughness as a material for a boiler tube, etc., for improving the thermal efficiency of thermal power generation and for attaining high temp. and high- pressure in steam conditions, i.e., attaining what is called ultrasupercritical pressure conditions. ;SOLUTION: This ferritic heat resistant steel excellent in high temp. strength and normal temp. toughness can be obtd. by optimizing the amounts of Mo and W to be added and positively utilizing Co and B. The main chemical components are composed of, by weight, 0.05 to 0.15% C, ≤0.50% Si, 0.05 to 1.50% Mn, 8.00 to 13.00% Cr, ≤1.00% Ni, 0.50% Mo, 3.50 to 7.50% W, 0.10 to 0.30% V, 0.01 to 0.15% Nb, 2.00 to 7.00% Co, 0.01 to 0.10% N, 0.0010 to 0.0100% B, ≤1.00% Cu, and the balance Fe with inevitable impuritis.;COPYRIGHT: (C)1998,JPO

机译：解决的问题：提供具有高强度和韧性的铁素体耐热钢作为锅炉管等的材料，以提高热力发电的热效率并达到高温。蒸汽条件下的高压和高压，即达到所谓的超超临界压力条件。 ;解决方案：这种耐高温的铁素体耐热钢。强度和正常温度韧性可以观察到。通过优化要添加的Mo和W的量并积极地利用Co和B。主要化学成分按重量计包括0.05至<0.15％的C，＆le; 0.50％的Si，0.05至1.50％的Mn，8.00至13.00％Cr，＆le; 1.00％Ni，<0.50％Mo，> 3.50至7.50％W，0.10至0.30％V，0.01至0.15％Nb，> 2.00至7.00％Co，0.01至0.10％N，0.0010至0.0100 ％B，＆le; 1.00％Cu和余下的Fe伴有不可避免的杂质。;版权：（C）1998，JPO

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公开/公告号JP3866816B2

专利类型
公开/公告日2007-01-10

原文格式PDF
申请/专利权人新日本製鐵株式会社;
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申请/专利号JP19970021580
发明设计人直井久;大神正浩;
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申请日1997-02-04
分类号C22C38/00;C22C38/52;C22C38/54;
国家 JP
入库时间 2022-08-21 21:07:23

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