黒心可鍛鋳鉄の衝撃特性におよぼす燐の影響

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タイトル別名
  • The Effects of Phosphorus on the Impact Properties of Black-Heart Malleable Cast Iron
  • コクシン カタンチュウテツ ノ ショウゲキ トクセイ ニ オヨボス リン ノ エイキョウ

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抄録

It is apparently move reasonable to study the effects of P on the impact properties of black-heart malleable cast iron on the basis of impact transition curve, than on the test results at normal temperature only. This experiment was carried out from such a stand-point. Four kinds of samples were prepared to contain P in the range of 0.06∼0.32%. They were malleablized, some were heated at various temperatures 250∼700°C, and then water-quenched. The impact tests were carried on that samples at temperatures of −196∼+200°C, and impact transition curves were obtained. The results were as follows: (1) According to the increase of P content, the impact transition temperature shifts to the higher side and low-temperature embrittlement is apt to appear, and the maximum absorbed energy decreases. (2) The transition temperature shifts to the higher side by heat treatment at various temperatures up to 600°C, and 450°C treatment raises the susceptibility to embrittlement most largely. (3) 650°C treatment shifts the transition temperature to the side of lower temperature, the degree of shift increases as the P content increases, and this treatment is effective as a method to recover toughness.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 26 (3), 199-204, 1962

    公益社団法人 日本金属学会

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