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1. 发明专利

JPH07109017B2 失效
公开(公告)号：JPH07109017B2
公开(公告)日：1995-11-22
申请号：JP14978387
申请日：1987-06-15
申请人： KOBE STEEL LTD
发明人： OOYAMA HIDETO , ASHIDA YOSHIO , TAKEMURA ATSUSHI
IPC分类号： C22C14/00

2. 发明专利

JPH03287735A TITANIUM ALLOY EXCELLENT IN CORROSION RESISTANCE 失效
公开(公告)号：JPH03287735A
公开(公告)日：1991-12-18
申请号：JP8891290
申请日：1990-04-02
申请人： TOYOHASHI GIJIYUTSU KAGAKU DAI , KOBE STEEL LTD
发明人： YUGAWA NATSUO , MORINAGA MASAHIKO , MORISHITA MASAO , ASHIDA YOSHIO , TSUKUDA MASAHIRO
IPC分类号： C22C14/00
摘要： PURPOSE:To manufacture a titanium alloy excellent in corrosion resistance by incorporating specified ratios of Pd, Ni and Hf into Ti. CONSTITUTION:A titanium alloy contg., by weight, 0.005 to 2.0% Pd, 0.1 to 2.0% Ni, 0.5 to 10.0% Hf and the balance Ti is prepd. In the above-mentioned manner, by adding Hf having high interatomic bonding force, the titanium alloy having improved corrosion resistance can extremely easily and surely be obtd.

3. 发明专利

JPH0331402A CONSTANT-TEMPERATURE FORGING METHOD FOR NI3AL-BASED INTERMETALLIC COMPOUND 失效
公开(公告)号：JPH0331402A
公开(公告)日：1991-02-12
申请号：JP16776489
申请日：1989-06-28
申请人： KOBE STEEL LTD
发明人： FUJITSUNA NORIYUKI , ASHIDA YOSHIO
IPC分类号： B21J5/00 , B22F3/02 , B22F3/17 , C22F1/00 , C22F1/10
摘要： PURPOSE:To produce the product of the Ni3Al intermetallic compd. having excellent quality characteristics by subjecting the sintered body of the powder of the Ni3Al intermetallic compd. to a constant-temp. forging at respectively specified temp., strain rate and working rate. CONSTITUTION:The sintered body of the powder consisting of the Ni3Al intermetallic compd. is subjected to the constant-temp. forging under the conditions of 1000 to 1350 deg.C, 1 to 1X20 /sec strain rate and >=50% working rate. The product or intermediate stock of the Ni3Al intermetallic compd. which has uniform and fine equi-axed crystals, is absent of the inclusions at the grain boundaries and has excellent quality characteristics is obtd. in this way.

4. 发明专利

JPH01111836A QUENCH HARDENING TYPE HIGH STRENGTH TI ALLOY 失效
公开(公告)号：JPH01111836A
公开(公告)日：1989-04-28
申请号：JP26955887
申请日：1987-10-26
申请人： KOBE STEEL LTD
发明人： OYAMA HIDETO , ASHIDA YOSHIO
IPC分类号： C22C14/00
摘要： PURPOSE:To obtain a Ti alloy having excellent strength without subjecting it to an aging treatment and furthermore having excellent ductility by adding specific amounts of Cu and Al to Ti. CONSTITUTION:The ingot of a Ti-Cu-Al alloy contg., by weight, 3-12% Cu, 2-8% Al and the balance Ti is heated to about 750 deg.C and is hot rolled. Said rolled material is retained for 5min to about 900 deg.C and is thereafter subjected to water quench hardening. The above Ti alloy having strength without subjecting it to an aging treatment and furthermore having excellent ductility can be manufactured as hardened.

5. 发明专利

JPH0196361A TREATMENT OF HIGH STRENGTH TITANIUM ALLOY BEFORE COLD WORKING 失效
公开(公告)号：JPH0196361A
公开(公告)日：1989-04-14
申请号：JP25095787
申请日：1987-10-05
申请人： KOBE STEEL LTD
发明人： OYAMA HIDETO , ASHIDA YOSHIO
IPC分类号： C22F1/18 , C22F1/00
摘要： PURPOSE:To improve the cold workability of the ductility, drawability, forgability etc., of the title alloy while retaining the high strength characteristics of the alloy by hot working and thereafter annealing a Near beta type Ti alloy under specific conditions. CONSTITUTION:The billet of a Near beta type Ti alloy such as Ti-10V-2Fe-3Al or Ti-5Al-2Sn-2Zn-4Mo-4Cr is subjected to hot working such as at least >=15% forging in the temp. range of alpha+beta and is annealed at the beta transformation point or below and at the temp. at which age hardening does not occur. The volume ratio of fine alpha phase crystal is increased, by which the Ti alloy having high strength and excellent cold workability is obtd.

6. 发明专利

JPS645098B2 失效
公开(公告)号：JPS645098B2
公开(公告)日：1989-01-27
申请号：JP11343782
申请日：1982-06-30
申请人： KOBE STEEL LTD
发明人： ASHIDA YOSHIO , MORIMOTO HIROYUKI
IPC分类号： C22C38/00 , C22C38/14

7. 发明专利

JPS644461A METHOD FOR CONTROLLING AVERAGE CRYSTALLINE GRAIN SIZE IN HEAT TREATMENT OF METALLIC MATERIAL 失效
公开(公告)号：JPS644461A
公开(公告)日：1989-01-09
申请号：JP15941087
申请日：1987-06-25
申请人： KOBE STEEL LTD
发明人： OYAMA HIDETO , ASHIDA YOSHIO , TAKEMURA ATSUSHI
IPC分类号： C22F1/18 , C22F1/00
摘要： PURPOSE:To properly control the average grain size of a metallic material, by accurately grasping heat treatment conditions affecting crystalline grain size, including temp.-rise rate at the time of the heat treatment of a material to be heat-treated. CONSTITUTION:At the time of heat-treating a metallic material in which average crystalline grain size when held at a heating temp. for a certain period is given approximately by equation I, length of time after the point of time when the temp. Ts of a material to be heat-treated reaches the recrystallization temp. To is subjected to m-division according to equation II and discretized as shown in equation III. Subsequently, heating time, etc., are calculated based on equations IV, V in succession, and the average crystalline grain size D(tm) in elapsed time is estimated from equation VI by using the temp. Ts(tm) of the material to be heat-treated at that time. According to the value of this average grain size D(tm), the average grain size in the heat treatment of the metallic material is controlled. By this method, a heat-treated material free from residual recrystallization-incomplete part and minimal in degree of surface roughness can be obtained with good reproducibility.

8. 发明专利

JPS63312938A HEAT RESISTANT TI ALLOY 失效
公开(公告)号：JPS63312938A
公开(公告)日：1988-12-21
申请号：JP14978387
申请日：1987-06-15
申请人： KOBE STEEL LTD
发明人： OYAMA HIDETO , ASHIDA YOSHIO , TAKEMURA ATSUSHI
IPC分类号： C22C14/00
摘要： PURPOSE:To obtain a heat resistant Ti alloy in which the Al content and the total content of eutectoid type beta phase stabilizing elements lie in the relationship which satisfies all of specific three inequalities and in which sufficient strength characteristics and hot workability can be obtd. even in the high temp. range of >=800 deg.C. CONSTITUTION:The heat resistant Ti alloy in which, by atom.%, the Al content and the total content of eutectoid type beta phase stabilizing elements (M elements) lie in the relationship which satisfies all of the inequalities (a)-(c) and consisting of the balance Ti with inevitable impurities is provided. As said M elements, e.g., Mn, Cr, Fe, Co, Ni, Cu, Zn, Si, etc., are exemplified; however, Mn, Cr and Fe are most preferable considering the addition effect, solubility, furthermore cost, etc. Said heat resistant Ti alloy does not lose the hot workability and yet has drastically improved high temp. characteristics compared to the conventional Ti alloy and TiAl intermetallic compound.

9. 发明专利

JPS63307236A TOOL MADE OF TITANIUM ALLOY AND ITS PRODUCTION 失效
公开(公告)号：JPS63307236A
公开(公告)日：1988-12-14
申请号：JP14056587
申请日：1987-06-04
申请人： KOBE STEEL LTD
发明人： OYAMA HIDETO , ASHIDA YOSHIO , TAKEMURA ATSUSHI
IPC分类号： C22F1/18 , C22C14/00 , C22F1/00
摘要： PURPOSE:To produce a lightweight tool made of Ti alloy having excellent hardness, high corrosion resistance and good workability in a short time by annealing the Ti alloy contg. specific amt. of Mn at a specific temp., subjecting it to cold working and thereafter executing quenching to said alloy from the specific temp. area. CONSTITUTION:The Ti alloy contg. 4-8.5wt.% Mn and the balance consisting of Ti with inevitable impurities is annealed at the temp. of 580-750 deg.C. In this way, said Ti alloy is formed into the state of two phases, i.e., alpha phase and betaphase, by which good workability is obtd. Said Ti alloy is cold worked into the prescribed shape. The preform is thereafter quenched from the temp. area of >=750 deg.C and more preferably about

10. 发明专利

JPS6349738B2 失效
公开(公告)号：JPS6349738B2
公开(公告)日：1988-10-05
申请号：JP11791980
申请日：1980-08-27
申请人： KOBE STEEL LTD
发明人： HOSOMI KOJI , ASHIDA YOSHIO , MORIMOTO HIROYUKI
IPC分类号： C22C38/00 , C22C38/14 , C22C38/52

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