繰り返し温度サイクルによる鋼の変態超塑性現象

DOI Web Site Web Site 被引用文献2件

書誌事項

タイトル別名
  • On the Phase-Transformation Superplasticity in Steels due to Temperature Cycling
  • クリカエシ オンド サイクル ニ ヨル コウ ノ ヘンタイ チョウソセイ ゲン

この論文をさがす

説明

The superplasticity in S15CK, SCM415 and SK5 steels due to temperature cycling under loading was studied in terms of elongation to fracture, m-value and microstructure of specimen fractured. Specimens subjected to constant tensile applied stress were thermal cycled through the austenite (A)\ ightleftarrowsferrite(F)+pearlite(P) or A\ ightleftarrowsP transformation. Main results obtained are as follows.<BR>(1) As the applied stress σ decreases, the strain rate sensitivity m increases. The increase of elongation to fracture due to temperature cycling is in a good agreement with that of m-value.<BR>(2) Elongations over 500% are observed on specimens thermal cycled to failure in the condition of m-value larger than 0.7.<BR>(3) The specimen elongated largely under the small applied stress, where high m-value prevents necking, is fractured with the formation and the interlinkage of many voids. The occurrence of large necking causes the specimen to fracture with smaller elongation because of low m-value under the large applied stress. The true strain per cycle increases corresponding to the occurrence of necking or probably to the formation of many voids.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 49 (4), 260-266, 1985

    公益社団法人 日本金属学会

被引用文献 (2)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ