Daido Steel Co., Ltd.

Jtekt Corporation

Ihi Corporation

Daido Tokushuko Kabushiki Kaisha

Tocalo Co., Ltd.

Daido Castings Co., Ltd.

Hiroyuki Takabayashi

Shigeki Ueta

Yoshihiko Koyanagi

Keita Hinoshita

Yoshinori Sumi

Kenji Sugiyama

Yusuke Kusafuka

Tomoya Hattori

Kazuhisa Kitamura

Hisato Nishisaka

Kazuhisa Ishida

Kanji Kawasaki

Fumihiro Furukawa

Nao Inazaki

Masashi Nagaya

Satoshi Takahashi

Toshiharu Noda

Tetsuya Shimizu

Junichi Takeuchi

Yuta Tanaka

Kota Sasaki

Isao Nakanowatari

Masaya Nagai

Yasuhiro Takenaka

Kyohei Yokota

Ei Kimura

Koshiro Yamane

Satoru Yusa

Shinichi Kubo

Akihiko Okamoto

Chihiro Furusho

Nobuyuki Takahashi

The present invention relates to an Ni-based alloy which is excellent in terms of wear resistance and high-temperature corrosion resistance and which includes 0.3&#x2264;C&#x2264;1.0 mass %, 36.0&#x2264;Cr&#x2264;50.0 mass %, and 3.0&#x2264;Al&#x2264;7.0 mass %, with the balance being Ni and unavoidable impurities, and relates to an Ni-based alloy product made of the Ni-based alloy according to the present invention, and methods for producing the Ni-based alloy product.

Ni-based alloy, and Ni-based alloy product and methods for producing the same

A rolling-sliding member that is high in hardness and continues to have a passivation film reliably even after being subjected to a process that does not require any processing for removal of scale, etc., as well as a rolling bearing using the same and a method for manufacturing the rolling-sliding member.

Rolling slide member, rolling bearing using same, and method for manufacturing rolling slide member

A rolling-sliding member that is high in hardness and continues to have a passivation film reliably even after being subjected to a process that does not require any processing for removal of scale etc., as well as a rolling bearing using the same and a method for manufacturing the rolling-sliding member.

A component for a hot-dip metal plating bath includes a base material and a thermal spray coating disposed to cover a surface of the base material. The base material includes ferritic stainless steel that contains: C: 0.10% to 0.50% by mass; Si: 0.01% to 4.00% by mass; Mn: 0.10% by mass to 3.00% by mass; Cr: 15.0% to 30.0% by mass; a total of Nb, V, Ti, and Ta: 0.9% by mass to 5.0% by mass; and a balance of Fe and unavoidable impurities. The ferritic stainless steel includes a microstructure that includes a ferrite phase as a main phase and a crystallized carbide, an area fraction of a Nb carbide, a Ti carbide, a V carbide, a Ta carbide, and a composite carbide thereof to the crystallized carbide of 30% or more. The hot-dip metal plating bath contains 50% by mass or more of Al.

Component for hot-dip metal plating bath

The present invention relates to a ferritic stainless steel according to the present invention, containing, in mass %: 0.001%&#x2264;C&#x2264;0.020%, 0.05%&#x2264;Si&#x2264;0.50%, 0.1%&#x2264;Mn&#x2264;1.0%, 15.0%&#x2264;Cr&#x2264;25.0%, Mo&#x3c;0.50%, 0.50%&#x2264;W&#x2264;5.00%, and 0.01%&#x2264;Nb&#x2264;0.50%, with a balance being Fe and unavoidable impurities, having a content (coarse Laves phase ratio) of coarse Laves phase having a diameter of 0.50 &#x3bc;m or more being 0.1% or less, and having an average grain size being 30 &#x3bc;m or more and 200 &#x3bc;m or less.

Ferritic stainless steel and heat-resistant member

The present invention relates to an Ni-based superalloy having a composition containing, in terms of % by mass, C: from 0.1 to 0.3%, Cr: from 8.0 to 12.0%, Mo: from 1.0 to 5.0%, Co: from 10.0 to 20.0%, Ta: from 0.01 to 1.50%, Ti: from 2.0 to 4.2%, Al: from 5.0 to 8.0%, V: from 0 to 1.5%, B: from 0.005 to 0.030%, and Zr: from 0.05 to 0.15%, with the balance being Ni and unavoidable impurities, and satisfying, in terms of atom %, Ti+Al being from 16.0 to 20.3% and Ti/Al being 0.3 or less.

Ni-based superalloy

The present invention relates to a maraging steel containing, in terms of mass %, 0.10&#x2264;C&#x2264;0.35, 9.0&#x2264;Co&#x2264;20.0, 1.0&#x2264;(Mo+W/2)&#x2264;2.0, 1.0&#x2264;Cr&#x2264;4.0, a certain amount of Ni, a certain amount of Al, and V+Nb&#x2264;0.60, with the balance being Fe and inevitable impurities, in which in a case of V+Nb&#x2264;0.020, the amount of Ni is 6.0&#x2264;Ni&#x2264;9.4 and the amount of Al is 1.4&#x2264;Al&#x2264;2.0, and in a case of 0.020&#x3c;V+Nb&#x2264;0.60, the amount of Ni is 6.0&#x2264;Ni&#x2264;20.0 and the amount of Al is 0.50&#x2264;Al&#x2264;2.0.

Maraging steel

The present invention relates to a maraging steel containing, in terms of mass %, 0.20&#x2264;C&#x2264;0.35, 9.0&#x2264;Co&#x2264;20.0, 1.0&#x2264;(Mo+W/2)&#x2264;2.0, 1.0&#x2264;Cr&#x2264;4.0, and a certain amount of Ni, with the balance being Fe and inevitable impurities, in which in a case where the contents of V and Nb satisfy V+Nb&#x2264;0.020 mass %, the amount of Ni is 6.0&#x2264;Ni&#x2264;9.4, and in which in a case where the contents of V and Nb satisfy 0.020 mass %&#x3c;V+Nb&#x2264;0.60 mass %, the amount of Ni is 6.0&#x2264;Ni&#x2264;16.0.

The present invention relates to a turbine wheel of an automotive turbocharger, including a Ni-based alloy having a composition which contains, in terms of mass %: C: 0.08 to 0.20%; Mn: 0.25% or less; Si: 0.01 to 0.50%; Cr: 12.0 to 14.0%; Mo: 3.80 to 5.20%; Nb+Ta: 1.80 to 2.80%; Ti: 0.50 to 1.00%; Al: 5.50 to 6.50%; B: 0.005 to 0.015%; Zr: 0.05 to 0.15%; and Fe: 0.01 to 2.5%, with the remainder being Ni and unavoidable impurities, in which the turbine wheel includes a wing part and a shaft part, and a size of &#x3b3;' phase in each site of from a tip of the wing part to the shaft part is structure-controlled so as to fall within a range of from 0.4 to 0.8 &#x3bc;m.

Turbine wheel of automotive turbocharger and method for producing the same

The present invention relates to a Ti&#x2014;Al-based heat-resistant member including a Ti&#x2014;Al-based alloy which includes: 28.0 mass % to 35.0 mass % of Al; 1.0 mass % to 15.0 mass % of at least one selected from the group consisting of Nb, Mo, W and Ta; 0.1 mass % to 5.0 mass % of at least one selected from the group consisting of Cr, Mn and V; and 0.1 mass % to 1.0 mass % of Si, with the balance being Ti and unavoidable impurities, in which a whole or a part of a surface of the Ti&#x2014;Al-based heat-resistant member includes a hardened layer as a surface layer, the hardened layer having a higher hardness than an inside of the Ti&#x2014;Al-based heat-resistant member, and the Ti&#x2014;Al-based heat-resistant member has a hardness ratio (a hardness of the surface layer/a hardness of the inside) of 1.4 to 2.5.

Ti&#x2014;Al-based heat-resistant member

The present invention provides a maraging steel containing: 0.10&#x2266;C&#x2266;0.30 mass %, 6.0&#x2266;Ni&#x2266;9.4 mass %, 11.0&#x2266;Co&#x2266;20.0 mass %, 1.0&#x2266;Mo&#x2266;6.0 mass %, 2.0&#x2266;Cr&#x2266;6.0 mass %, 0.5&#x2266;Al&#x2266;1.3 mass %, and Ti&#x2266;0.1 mass %, with the balance being Fe and unavoidable impurities, and satisfying 1.00&#x2266;A&#x2266;1.08, in which A is 0.95+0.35&#xd7;[C]&#x2212;0.0092&#xd7;[Ni]+0.011&#xd7;[Co]&#x2212;0.02&#xd7;[Cr]&#x2212;0.001&#xd7;[Mo], where [C] indicates a content (mass %) of C, [Ni] indicates a content (mass %) of Ni, [Co] indicates a content (mass %) of Co, [Cr] indicates a content (mass %) of Cr, and [Mo] indicates a content (mass %) of Mo, respectively. The maraging steel has a tensile strength of 2,300 MPa or more and is also excellent in the toughness/ductility and fatigue characteristics.

Aircraft engine shaft comprising a maraging steel having a tensile strength of 2300MPa or more

The present invention aim at providing a steel for steam turbine blades which is excellent in terms of strength and toughness. The steel of the present invention has a composition which contains, in terms of % by mass, 0.02-0.10% of C, up to 0.25% of Si, 0.001-0.10% of Mn, up to 0.010% of P, up to 0.010% of S, 8.5-10.0% of Ni, 10.5-13.0% of Cr, 2.0-2.5% of Mo, 0.001-0.010% of N, 1.15-1.50% of Al, less than 0.10% of Cu, up to 0.20% of Ti, and the remainder being incidental impurities and Fe, and which satisfies 6.0&#x2266;Ni/Al&#x2266;8.0, 9.0&#x2266;Nieq&#x2266;11.0 and 17.0&#x2266;Creq&#x2266;19.0, in whichNieq=[Ni]+0.11[Mn]&#x2212;0.0086([Mn])+0.44[Cu]+18.4[N]+24.5[C]Creq=[Cr]+1.21[Mo]+0.48[Si]+2.2[Ti]+2.48[A1].

Steel for steam turbine blade with excellent strength and toughness

The present invention provides: a ferritic stainless steel cast iron including: Fe as a main component; C: 0.20 to 0.40 mass %; Si: 1.00 to 3.00 mass %; Mn: 0.30 to 3.00 mass %; Cr: 12.0 to 30.0 mass %; and one of Nb and V, or both of Nb and V in total: 1.0 to 5.0 mass %, the ferritic stainless steel cast iron satisfying the following formula (1):1400&#x2266;1562.3&#x2212;{133WC+14WSi+5WMn+10(WNb+WV)}&#x2266;1480&#x2003;&#x2003;(1)wherein, WC (mass %), WSi (mass %), WMn (mass %), WCr (mass %), WNb (mass %), WV (mass %) and WCu (mass %) are contents of C, Si, Mn, Cr, Nb, V and Cu, respectively; a process for producing a cast part from the ferritic cast steel; and the cast part.

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Nagoya, Japan

Hiroyuki Takabayashi