消耗電極式アーク溶解したAISI 316ステンレス鋼の高温捻回性質

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タイトル別名
  • High Temperature Torsion Test of Consumable Electrode Arc-Melted AISI 316 Stainless Steel
  • ショウモウ デンキョクシキ アーク ヨウカイ シタ AISI 316 ステンレス コウ ノ コウオンネンカイ セイシツ

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抄録

The improvement of hot-workability of consumable electrode arc melted metal was examined by high temperature torsion test. The test materials were air-melted AISI 316 stainless steel and its consumable electrode arc-remelted specimens. The oxygen content decreased remarkably from 0.0084% to 0.0033% and the Mn content a little from 1.84% to 1.42% by arc-remelting, but the other contents showed no change. The forgings were solution-treated at 1150°C for 1 hr and water-quenched. All the specimens showed the micro-structures of austenite, and the results of tensile tests and impact tests at room and high temperatures showed no difference between air-melted and arc-melted specimens, except for the reduction of area of the former was slightly higher than that of the latter. Tensile tests of specimens water-quenched from various temperatures of hot torsion tests, also show the same results as above, and their structures were always of austenite. High temperature torsion tests were carried out at 650°, 800°, 900°, 1000°, 1,100° and 1,200°C at the rotation speed of 30 rpm and 128 rpm. The number to failure were minimum at 800°C and then increased with rise of temperature, while the maximum torque values decreased gradually. In these tests, the arc-melted material, which is almost the same with air-melted one in tensile properties and structures as mentioned above, indicates higher value in the number to failure, the maximum torque values and the area surrounded by the revolution-torque curves. These results show that the consumable-electrode arc-melted material is superior to air-melted one in hot workability as well as resistance to deformation at high temperature.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 26 (8), 540-544, 1962

    公益社団法人 日本金属学会

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