Development and electrochemical characterization of stainless, TIG welded precision tubes made of CrMnNiMoN austenitic hot-rolled steel strip (T05#)

CrMnNiMoN 奥氏体热轧钢带 (T05) 不锈钢 TIG 焊接精密管的开发和电化学表征

• 批准号: 429265005
• 金额: --
• 依托单位: Institut für Eisen- und Stahltechnologie
• 依托单位国家: 德国
• 项目类别: Collaborative Research Centres (Transfer Project)
• 财政年份: 2019
• 资助国家: 德国
• 起止时间: 2018-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/429265005?language=en
• 关键词: Development; electrochemical; characterization; stainless; TIG

The aim of the transfer project is the conception, processing and research of cost-effective, weldable, austenitic, stainless CrMnNiMoN steel with TRIP/TWIP properties on a laboratory scale, as well as its industrial production and verification in the manufacture of TIG-welded precision tubes. The steel is characterised by a reduced nickel content and elevated manganese and nitrogen concentrations to decrease the alloy costs. TRIP/TWIP effects lead to a high deformation and hardening capacity of the austenitic steel during tube production and open up the possibility of material savings in the sense of a leaner product design. The work includes intensive investigations of pitting and repassivation behaviour as well as the sensitivity against to stress corrosion cracking and hydrogen induced cracking on the hot rolled strip and the TIG welded material.

该转让项目的目的是在实验室规模上对具有TRIP/TTRIP性能的高性价比、可焊接、奥氏体不锈钢CrMnNiMoN钢进行概念、加工和研究，以及在TIG焊接精密管制造中的工业生产和验证。该钢的特点是镍含量降低，锰和氮浓度升高，以降低合金成本。TRIP/TTRIP效应使奥氏体钢在管材生产过程中具有较高的变形和硬化能力，并在更精简的产品设计意义上节省了材料。这项工作包括深入调查的点蚀和再钝化行为，以及对应力腐蚀开裂和氢致开裂的热轧带钢和TIG焊接材料的敏感性。