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1. 发明专利

DE3175528D1 USE OF NICKEL BASE ALLOY HAVING HIGH RESISTANCE TO STRESS CORROSION CRACKING 未知
公开(公告)号：DE3175528D1
公开(公告)日：1986-12-04
申请号：DE3175528
申请日：1981-12-22
申请人： HITACHI LTD , HITACHI METALS LTD
发明人： HATTORI SHIGEO , WATANABE RIKIZO , MORI YASUHIKO , MASAOKA ISAO , SASAKI RYOICHI , ITOW HISAO
IPC分类号： C22C19/05
摘要： A member adapted for use under a stress in an atmosphere of a temperature below the creep temperature and made from an Ni base alloy having a high resistance to stress corrosion cracking. The Ni alloy consists essentially of, by weight, 15 to 25% of Cr, 1 to 8% of Mo, 0.4 to 2% of Al, 0.7 to 3% of Ti, 0.7 to 4.5% of Nb and the balance Ni, and has an austenite matrix in which precipitated is at least one of y' phase and y" phase. The member can suitably used as parts which are subjected to pure water in nuclear reactor.

2. 发明专利

CA1186535A NICKEL BASE ALLOY HAVING HIGH RESISTANCE TO STRESS CORROSION CRACKING AND METHOD OF PRODUCING SAME 未知
公开(公告)号：CA1186535A
公开(公告)日：1985-05-07
申请号：CA393087
申请日：1981-12-23
申请人： HITACHI LTD , HITACHI METALS LTD
发明人： HATTORI SHIGEO , WATANABE RIKIZO , MORI YASUHIKO , MASAOKA ISAO , SASAKI RYOICHI , ITOW HISAO
IPC分类号： C22C19/05
摘要： A member adapted for use under a stress in an atmosphere of a temperature below the creep temperature and made from an Ni base alloy having a high resistance to stress corrosion cracking. The Ni alloy consists essentially of, by weight, 15 to 25% of Cr, 1 to 8% of Mo, 0.4 to 2% of Al, 0.7 to 3% of Ti, 0.7 to 4.5% of Nb and the balance Ni, and has an austenite matrix in which precipitated is at least on of Y' phase and Y" phase. The member can suitably used as parts which are subjected to pure water in nuclear reactor.

3. 发明专利

JPS58142298A GAP STRUCTURE BETWEEN MENBERS OF MACHINE 失效
公开(公告)号：JPS58142298A
公开(公告)日：1983-08-24
申请号：JP2447782
申请日：1982-02-19
申请人： HITACHI LTD
发明人： MORI YASUHIKO , KUNIYA JIROU , MASAOKA ISAO , SUZUKI KENICHI , KOGA KAZUO
IPC分类号： F16J15/08 , G21C1/20 , G21C13/067 , G21D1/00

4. 发明专利

JPS56169741A COMPONENT FOR NUCLEAR REACTOR AND HEAT TREATING METHOD THEREOF 失效
公开(公告)号：JPS56169741A
公开(公告)日：1981-12-26
申请号：JP7320880
申请日：1980-05-30
申请人： HITACHI LTD
发明人： MORI YASUHIKO , HATSUTORI SHIGEO , MASAOKA ISAO , ITOU HISAO
IPC分类号： C22C19/05 , C22F1/00 , C22F1/10
摘要： PURPOSE:To provide a component having excellent stress corrosion cracking resistance, by treating a nickel basic alloy containing each necessary amount of Ti, Nb and Cr so that gamma' phase and chromium carbide separate out and the matrix possesses austenite texture. CONSTITUTION:A nickel basic alloy containing 0.01-0.2wt% C, 10-25wt% Cr, 0.5-5wt% Ti, 0.3-2wt% Nb and 0.1-2wt% Al in subjected to hot plastic working. Subsequently, solution treatment is carried out at a temperature of 1,000- 1,250 deg.C to give a single phase alloy. Further, aging treatment is performed at a temperature of 650-750 deg.C to deposit gamma' phase and chromium carbide. Thus, a mickel basic alloy having high stress corrosion cracking resistance in hot high pressure pure water is obtained. Further, it is preferable that the mickel basic alloy contains about 2% or less Si, about 2% or less Mn and about 10% or less Fe.

5. 发明专利

JPH0152464B2 失效
公开(公告)号：JPH0152464B2
公开(公告)日：1989-11-08
申请号：JP11646084
申请日：1984-06-08
申请人： HITACHI LTD
发明人： MORI YASUHIKO , KUNYA JIRO , MASAOKA ISAO
IPC分类号： C22C38/00 , C22C38/44

6. 发明专利

JPS6386841A STRUCTURE HAVING SUPERIOR RESISTANCE TO STRESS CORROSION CRACKING 失效
公开(公告)号：JPS6386841A
公开(公告)日：1988-04-18
申请号：JP15769087
申请日：1987-06-26
申请人： HITACHI LTD
发明人： MORI YASUHIKO , HATTORI SHIGEO , MASAOKA ISAO , ITO HISAO
IPC分类号： C22C19/05
摘要： PURPOSE:To obtain a structure having superior resistance to stress corrosion cracking by using members made of a precipitation hardening Ni alloy having a specified compsn. consisting of C, Si, Mn, Cr, Al, Ti, Nb, Fe and Ni and contg. gamma' phase and chromium carbide. CONSTITUTION:When a structure provided with members each having a crevice and coming in contact with other member in pure water at high temp. and pressure is obtd., the members of the structure are made of a precipitation hardening Ni alloy consisting of, by weight, 0.01-0.2% C,

7. 发明专利

JPS59136443A Bolt material excellent in stress, corrosion, cracking resistance 失效
标题翻译：螺栓材料在应力，腐蚀，抗裂性方面优秀
公开(公告)号：JPS59136443A
公开(公告)日：1984-08-06
申请号：JP13564283
申请日：1983-07-25
申请人： Hitachi Ltd , Hitachi Metals Ltd
发明人： HATSUTORI SHIGEO , WATANABE RIKIZOU , MORI YASUHIKO , MASAOKA ISAO , SASAKI RIYOUICHI , ITOU HISAO
IPC分类号： C22C19/05
摘要： PURPOSE: To enhance the stress corrosion cracking resistance of a bolt under a high temp. water environment, by preparing the bolt used under a gap and stress acting condition in the high temp. water environment from an Ni-alloy.
CONSTITUTION: The bolt used under a gap and stress acting condition in a high temp. water environment within a boiling water type or pressure water type nuclear reactor is fabricated from an Ni-alloy containing, on a wt. basis, 15W 25% Cr, 1W8% Mo, 0.4W2% Al, 0.7W3% Ti, 0.7W4.5% Nb, less than 40% Fe and more than 40% Ni. In this case, contained Al, Ti and Nb are contained in the range shown by the relation of 3.5%≤2Al+Ti+0.5Nb≤5.5%. This Ni- alloy contains one or more of a γ'-phase and a γ"-phase in the austenite phase base of the structure thereof and suitable for a bolt material showing excellent stress corrosion cracking resistance used in a high temp. water environment.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：提高高温下螺栓的抗应力腐蚀开裂性能。水环境，通过准备在高温下在间隙下使用的螺栓和应力作用条件。来自Ni合金的水环境。构成：在高温下在间隙和应力作用条件下使用的螺栓。沸水型或压水型核反应堆内的水环境由Ni合金制成，基础为15-25％Cr，1-8％Mo，0.4-2％Al，0.7-3％Ti，0.7-4.5％Nb，小于40％Fe和超过40％的Ni。在这种情况下，包含的Al，Ti和Nb的含量在3.5％<= 2Al + Ti + 0.5Nb <= 5.5％的关系所示的范围内。该镍合金在其结构的奥氏体相中含有一个或多个γ'相和γ“相，并且适用于在高温下使用的具有优异的应力腐蚀开裂性的螺栓材料。水环境。

8. 发明专利

JPS5980761A HEAT TREATMENT OF NI ALLOY FOR IMPROVING STRESS CORROSION CRACKING RESISTANCE 失效
公开(公告)号：JPS5980761A
公开(公告)日：1984-05-10
申请号：JP18895082
申请日：1982-10-29
申请人： HITACHI LTD
发明人： URAYAMA YOSHINAO , HATSUTORI SHIGEO , MORI YASUHIKO , HOSOI KISHIYUU , MASAOKA ISAO
IPC分类号： C22C19/05 , C22F1/00 , C22F1/10
摘要： PURPOSE:To improve the intergranular corrosion resistance and stress corrosion cracking resistance of parts made of an Ni alloy having a specified composition contg. precipitation hardening elements by subjecting the Ni alloy to soln. heat treatment and by aging it under conditions of temp. and time satisfying specified relation. CONSTITUTION:An Ni alloy contg. Al, Ti and Nb as precipitation hardening elements as well as >=10wt% Cr is subjected to soln. heat treatment. After carrying out plastic working as required, the alloy is aged under conditions of aging temp. T( deg.C) and aging time (t) satisfying an equation T>=-3/2t+760 (where T is 620-730 deg.C, and t is

9. 发明专利

JPS58146893A SEAL PLUG FOR CONVERTER REACTOR 失效
公开(公告)号：JPS58146893A
公开(公告)日：1983-09-01
申请号：JP2883082
申请日：1982-02-26
申请人： HITACHI LTD
发明人： MORI YASUHIKO , KUNIYA JIROU , MASAOKA ISAO , SUZUKI KENICHI , KOGA KAZUO
IPC分类号： G21C13/067 , G21C1/20 , G21D1/00

10. 发明专利

JPS5871484A NUCLEAR REACTOR CONTROL ROD POISON TUBE AND ITS MANUFACTURE 失效
公开(公告)号：JPS5871484A
公开(公告)日：1983-04-28
申请号：JP16878681
申请日：1981-10-23
申请人： HITACHI LTD
发明人： MORI YASUHIKO , YOSHIDA SUMI , MASAOKA ISAO , NARUSE AKISUKE
IPC分类号： G21C7/24 , G21C7/10

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