…When an external force is applied, this retained austenite transforms into martensite, generating plastic strain, absorbing the energy of the external force, and alleviating stress inside the component. Steels that have been designed with components that allow retained austenite to remain in the steel and with a composition designed to withstand shocks from the outside world during use are called TRIP steels (transformation induced plasticity steels). The excellent low-temperature toughness of nickel steels is thought to be due to the reduction in the brittleness of ferrite caused by the addition of nickel, and the effect of retaining austenite. … *Some of the terminology that refers to "transformation induced plasticity steel" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…この残留オーステナイトは,外力が作用したときマルテンサイトに変態して塑性ひずみを生成し,外力系のエネルギーを吸収して,部材内部の応力を緩和する作用がある。積極的に鋼中に残留オーステナイトを存在させて,使用中の外界からの衝撃に耐えるように成分を設計した鋼をTRIP鋼transformation induced plasticity steelと呼ぶ。ニッケル鋼の優れた低温靱性は,このようなニッケル添加によるフェライトの脆性の軽減と,オーステナイトの残留の効果によるものと考えられる。… ※「transformation induced plasticity steel」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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