CALORIMETRIC ANALYSIS OF AGING REACTION IN Ni MARAGING STEELS CONTAINING Ti.

Setsuo Takaki; Yasutoshi Sujita; Youichi Tokunaga

doi:10.2320/jinstmet1952.45.10_1101

CALORIMETRIC ANALYSIS OF AGING REACTION IN Ni MARAGING STEELS CONTAINING Ti.

Setsuo Takaki, Yasutoshi Sujita, Youichi Tokunaga

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

Aging reactions in 18-20%Ni maraging steels containing Co, Mo and Ti have been investigated. With Ti above about 1%, the formation of Mo rich zones is suppressed and the precipitation of phases containing Ti occurs. In an Fe-18%Ni-10%Co-5%Mo-2. 1%Ti alloy, the specific heat versus temperature curve is characterized by the appearance of three evolution peaks at 470, 540 and 600 degree C, corresponding to precipitation of a low temperature phase containing Ti,Ni//3Ti(DO//2//4) and Ni//3Mo. On isothermal aging at about 500 degree C, this alloy hardens by precipitation of the low temperature Ti-phase in the early stage and precipitation of Ni//3Mo in the later stage.

Original language	English
Pages (from-to)	1101-1106
Number of pages	6
Journal	Nippon Kinzoku Gakkai-si
Volume	45
Issue number	10
DOIs	https://doi.org/10.2320/jinstmet1952.45.10_1101
Publication status	Published - 1981

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys
Materials Chemistry

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10.2320/jinstmet1952.45.10_1101

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title = "CALORIMETRIC ANALYSIS OF AGING REACTION IN Ni MARAGING STEELS CONTAINING Ti.",

abstract = "Aging reactions in 18-20%Ni maraging steels containing Co, Mo and Ti have been investigated. With Ti above about 1%, the formation of Mo rich zones is suppressed and the precipitation of phases containing Ti occurs. In an Fe-18%Ni-10%Co-5%Mo-2. 1%Ti alloy, the specific heat versus temperature curve is characterized by the appearance of three evolution peaks at 470, 540 and 600 degree C, corresponding to precipitation of a low temperature phase containing Ti,Ni//3Ti(DO//2//4) and Ni//3Mo. On isothermal aging at about 500 degree C, this alloy hardens by precipitation of the low temperature Ti-phase in the early stage and precipitation of Ni//3Mo in the later stage.",

author = "Setsuo Takaki and Yasutoshi Sujita and Youichi Tokunaga",

year = "1981",

doi = "10.2320/jinstmet1952.45.10_1101",

language = "English",

volume = "45",

pages = "1101--1106",

journal = "Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals",

issn = "0021-4876",

publisher = "公益社団法人日本金属学会",

number = "10",

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TY - JOUR

T1 - CALORIMETRIC ANALYSIS OF AGING REACTION IN Ni MARAGING STEELS CONTAINING Ti.

AU - Takaki, Setsuo

AU - Sujita, Yasutoshi

AU - Tokunaga, Youichi

PY - 1981

Y1 - 1981

N2 - Aging reactions in 18-20%Ni maraging steels containing Co, Mo and Ti have been investigated. With Ti above about 1%, the formation of Mo rich zones is suppressed and the precipitation of phases containing Ti occurs. In an Fe-18%Ni-10%Co-5%Mo-2. 1%Ti alloy, the specific heat versus temperature curve is characterized by the appearance of three evolution peaks at 470, 540 and 600 degree C, corresponding to precipitation of a low temperature phase containing Ti,Ni//3Ti(DO//2//4) and Ni//3Mo. On isothermal aging at about 500 degree C, this alloy hardens by precipitation of the low temperature Ti-phase in the early stage and precipitation of Ni//3Mo in the later stage.

AB - Aging reactions in 18-20%Ni maraging steels containing Co, Mo and Ti have been investigated. With Ti above about 1%, the formation of Mo rich zones is suppressed and the precipitation of phases containing Ti occurs. In an Fe-18%Ni-10%Co-5%Mo-2. 1%Ti alloy, the specific heat versus temperature curve is characterized by the appearance of three evolution peaks at 470, 540 and 600 degree C, corresponding to precipitation of a low temperature phase containing Ti,Ni//3Ti(DO//2//4) and Ni//3Mo. On isothermal aging at about 500 degree C, this alloy hardens by precipitation of the low temperature Ti-phase in the early stage and precipitation of Ni//3Mo in the later stage.

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JO - Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals

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ER -

CALORIMETRIC ANALYSIS OF AGING REACTION IN Ni MARAGING STEELS CONTAINING Ti.

Abstract

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