Ti-Al-Co合金における応力によるマルテンサイト生成について

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タイトル別名
  • On the Formation of Stress-Induced Martensite in Ti-Al-Co Alloys
  • Ti-Al-Co ゴウキン ニ オケル オウリョク ニ ヨル マルテンサイト セイセイ ニ ツイテ

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抄録

The phenomenon of decrease of yield strength in Ti-4∼8%Al-2∼6%Co alloys quenched from β or α+β fields was investigated by tensile test, hardness measurement, microscopic observation and X-ray diffraction techniques. The remarkable decrease of yield strength in alloys containing 2∼4%Co is due to the deformation caused by martensite formation. The stress required to form martensite has relation with the stability of retained β phase,and the stability of retained β depends principally on the content of Co. The reason why the formation of stress-induced martensite takes place in Ti-Al-Co ternary alloys and not in Ti-Co binary alloys is that in the ternary alloys aluminium inhibits the formation of ω phase.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 25 (9), 568-573, 1961

    公益社団法人 日本金属学会

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