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1. 发明授权

US4405369A Ferritic heat-resisting steel with an excellent toughness 失效
标题翻译：铁素体耐热钢具有优异的韧性
公开(公告)号：US4405369A
公开(公告)日：1983-09-20
申请号：US288397
申请日：1981-07-30
申请人： Yasuo Otoguro , Katukuni Hashimoto , Hisashi Takahashi , Toshio Fujita
发明人： Yasuo Otoguro , Katukuni Hashimoto , Hisashi Takahashi , Toshio Fujita
IPC分类号： C22C38/00 , C22C38/22 , C22C38/24 , C22C38/26
CPC分类号： C22C38/22
摘要： A ferritic heat-resisting steel with an excellent toughness comprises0.03 to 0.10% by weight of carbon,0.1 to 1.0% by weight of silicon,1.5% by weight or less of manganese,1.5% to 2.7% by weight of molybdenum,7.0% to 10.0% by weight of chromium,0.01 to 0.1% by weight of niobium,0.02 to 0.12% by weight of vanadium,0.01 to 0.10% by weight of alloying element consisting of at least one member selected from the group consisting of rare earth elements having atomic numbers 57 through 71 and yttrium, andthe balance consisting of iron and unavoidable impurities, in which steel the ratio of the sum of the numbers of niobium and vanadium atoms to the number of carbon atoms is in the range of from 0.35 to 0.80; and the quantity (Cr%/30+Mo%/10-C%) and the content in percent of said alloying element fall on or within an irregular pentagon indicated in FIG. 1, the irregular pentagon being defined by the following points of A, B, C, P and D,______________________________________ Coordinate ##STR1## and Y content) (%)(The Sum of REMAlloying element ______________________________________ A 0.28 0.10 B 0.28 0.01 C 0.52 0.01 P 0.57 0.055 D 0.52 0.10 ______________________________________
摘要翻译：具有优异韧性的铁素体耐热钢含有0.03〜0.10重量％的碳，0.1〜1.0重量％的硅，1.5重量％以下的锰，1.5〜2.7重量％的钼，7.0重量％至10.0重量％的铬，0.01〜0.1重量％的铌，0.02〜0.12重量％的钒，0.01〜0.10重量％的合金元素，由选自稀土元素原子序数57〜71和钇，余量由铁和不可避免的杂质组成，其中铌和钒原子数之和与碳原子数之比的比例在0.35至0.80的范围内 ; 并且所述合金元素的含量（Cr％/ 30 + Mo％/ 10-C％）和所述合金元素的含量落在图5所示的不规则五边形之上或之内。 1，不规则五边形由以下A点，B，C，P和D点所定义， - - 中和＆lt; IMAGE＆gt;和Y含量）（％）（REMAlloying元素总和-A 0.28 0.10 -B 0.28 0.01 - C 0.52 0.01 -P 0.57 0.055 -D 0.52 0.10 -

2. 发明授权

US4844755A High-strength heat-resisting ferritic steel pipe and tube 失效
标题翻译：高强度耐热铁素体钢管和管材
公开(公告)号：US4844755A
公开(公告)日：1989-07-04
申请号：US239037
申请日：1988-08-29
申请人： Katukuni Hashimoto , Yasuo Otoguro , Toshio Fujita
发明人： Katukuni Hashimoto , Yasuo Otoguro , Toshio Fujita
IPC分类号： C22C38/00 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/32
CPC分类号： C22C38/24 , C22C38/22 , C22C38/26 , Y10S148/909
摘要： A high-strength, heat-resisting ferritic steel pipe or tube for boiler use containing 0.03 to 0.15% C, 0.1 to 1.5% Mn, 8 to 13% Cr, 1.8 to 3.0% W, 0.05 to 0.30% V, 0.02 to 0.12% Nb, 0.02 to 0.05% N, 0.02 to 0.4% Mo, and up to 0.25% Si. This pipe or tube has an improved high-temperature creep rupture strength and an excellent weldability and toughness.
摘要翻译：一种用于锅炉用的高强度，耐热的铁素体钢管或管，其含有0.03〜0.15％的C，0.1〜1.5％的Mn，8〜13％的Cr，1.8〜3.0％的W，0.05〜0.30％的V，0.02〜0.12 ％Nb，0.02〜0.05％N，0.02〜0.4％Mo和至多0.25％Si。该管或管具有改善的高温蠕变断裂强度和优异的可焊性和韧性。

3. 发明授权

US4463061A Boiler tube having improved high temperature mechanical strength, improved high temperature corrosion resistant property and resistance to embrittlement during service 失效
标题翻译：锅炉管具有改善的高温机械强度，改善的高温耐腐蚀性能和在使用过程中的脆化性
公开(公告)号：US4463061A
公开(公告)日：1984-07-31
申请号：US502836
申请日：1983-06-09
申请人： Yasuo Otoguro , Mikio Yamanaka , Katukuni Hashimoto , Mizuo Sakakibara , Masao Onoyama
发明人： Yasuo Otoguro , Mikio Yamanaka , Katukuni Hashimoto , Mizuo Sakakibara , Masao Onoyama
IPC分类号： C22C30/00 , B32B15/01 , C22C38/00 , C22C38/50 , C22C38/58 , F22B37/04 , F28F21/08 , B32B27/06
CPC分类号： F28F21/082 , B32B15/011 , Y10T428/12354 , Y10T428/12931 , Y10T428/12965
摘要： A boiler tube having improved high temperature strength, improved high temperature corrosion resistance, and resistivity to embrittlement during the service thereof, comprising an outer surface layer and an inner part, the outer surface layer consisting essentially, by weight, of 0.03-0.20% carbon, 1.5-4.0% silicon, 0.1-3.0% manganese, 13-25% chromium, 13-40% nickel, 0.5-3.0% at least one kind selected from the group consisting of molybdenum and tungsten, 0.05-0.5% at least one kind selected from the group consisting of titanium, niobium and vanadium, and the balance iron and inevitable impurities, the inner part consisting essentially, by weight, of 0.03-0.20% carbon, 0.3-1.0% silicon, 0.1-3.0% manganese, 13-25% chromium, 13-40% nickel, 0.5-3.0% at least one kind selected from the group consisting of molybdenum and tungsten, 0.05-0.5% at least one kind selected from the group consisting of titanium, niobium and vanadium, and the balance iron and inevitable impurities. Boron of 0.001-0.01% may be further added to the alloy to improve creep strength while keeping improved high temperature corrosion resistance.
摘要翻译：一种具有改善的高温强度，改善的耐高温腐蚀性以及在其使用期间脆化的电阻率的锅炉管，包括外表面层和内部部分，所述外表面层基本上由0.03-0.20％碳组成，1.5-4.0％硅，0.1-3.0％锰，13-25％铬，13-40％镍，0.5-3.0％选自钼和钨的至少一种，0.05-0.5％的至少一种选自钛，铌和钒组成的组，余量为铁和不可避免的杂质，其内部基本上由0.03-0.20％的碳，0.3-1.0％的硅，0.1-3.0的锰，13 -25％铬，13-40％镍，0.5-3.0％选自钼和钨的至少一种，0.05-0.5％选自钛，铌和钒中的至少一种，以及余铁和不可避免的杂质。可以进一步向合金中添加0.001-0.01％的硼以提高蠕变强度，同时保持改善的耐高温腐蚀性。

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