水素化チタンの熱分解反応を利用した純チタン粉末材の創製 Fabrication of Powder Metallurgy Pure Ti Material by Using Thermal Decomposition of TiH_2

この論文にアクセスする

この論文をさがす

著者

抄録

  Titanium (Ti) and titanium alloys have been interested as an engineering material because they are widely used across various industrial applications, for example, motorcycle, automotive and aerospace industries, due to their light weight, high specific strength and superior corrosion resistance. Ti materials are particularly significant for the aircraft using carbon/carbon (C/C) composites, for example, carbon fiber reinforced plastics (CFRP), because Ti materials are free from the problem of contact corrosion between C/C composites. However, the applications of Ti materials are limited because of their high cost. From a viewpoint of cost reduction, cost effective process to fabricate Ti materials is strongly required. In the present study, the direct consolidation of titanium hydride (TiH<SUB>2</SUB>) raw powders in solid-state was employed to fabricate pure Ti bulk materials by using thermal decomposition of TiH<SUB>2</SUB>. In general, the production cost of Ti components is expensive due to using commercially pure (CP) Ti powders after dehydrogenation. On the other hand, the novel process using TiH<SUB>2</SUB> powders as starting materials is a promising low cost approach for powder metallurgy (P/M) Ti products. Furthermore, this new process is also attractive from a viewpoint of energy saving because the dehydrogenation is integrated into the sintering process. In this study, TiH<SUB>2</SUB> raw powders were directly consolidated by conventional press technique at 600 MPa to prepare TiH<SUB>2</SUB> powder compacted billets. To thermally decompose TiH<SUB>2</SUB> and obtain sintered pure Ti billets, the TiH<SUB>2</SUB> powder billets were heated in the integrated sintering process including dehydrogenation. The hot-extruded pure Ti material, which was heat treated at 1273 K for 180 min in argon gas atmosphere, showed tensile strength of 701.8 MPa and elongation of 27.1%. These tensile properties satisfied the requirements for JIS Ti Grade 4. The relationship between microstructures, mechanical properties response and heat treatment temperature is discussed in detail.

収録刊行物

  • 高温学会誌

    高温学会誌 37(6), 326-331, 2011-11-20

    一般社団法人 スマートプロセス学会 (旧高温学会)

参考文献:  11件中 1-11件 を表示

  • <no title>

    COLLINGS E. W.

    Materials Properties Handbook : Titanium Alloys 165, 1994

    被引用文献1件

  • <no title>

    日本塑性加工学会

    チタンの基礎と加工, 4-13, 2008

    被引用文献1件

  • <no title>

    日本機械学会

    機械実用便覧, 697-703, 1990

    被引用文献1件

  • <no title>

    BARIN I.

    Thermochemical Data of Pure Substances 1538, 1989

    被引用文献1件

  • <no title>

    SAN-MARTIN A.

    Bull. Alloy Phase Diag. 8, 30-42, 1987

    被引用文献1件

  • <no title>

    OUCHI C.

    Mater. Sci. Eng. A 243, 186-195, 1998

    被引用文献1件

  • <no title>

    XU J. J.

    J. Alloys Compd. 436, 82-85, 2007

    被引用文献1件

  • <no title>

    WANG H.

    Key Eng. Mater 436, 157-163, 2010

    被引用文献1件

  • <no title>

    MELENDEZ I. M.

    Mater. Sci. Eng. A 527, 4466-4473, 2010

    被引用文献1件

  • <no title>

    QIAN M.

    Int. J. Powder Metall. 46(5), 29-44, 2010

    被引用文献1件

  • <no title>

    CONRAD H.

    Prog. Mater. Sci. 26, 123-403, 1981

    被引用文献2件

各種コード

  • NII論文ID(NAID)
    10030167123
  • NII書誌ID(NCID)
    AN00080051
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03871096
  • NDL 記事登録ID
    023339937
  • NDL 請求記号
    Z15-317
  • データ提供元
    CJP書誌  NDL  J-STAGE 
ページトップへ