超塑性材料现状及新型超塑性低中碳合金钢研发.docVIP

超塑性材料现状及新型超塑性低中碳合金钢研发 曹文全 张万里 徐海峰 翁宇庆 钢铁研究总院特殊钢研究所 华中科技大学材料科学与工程学院 X 关注成功！ 加关注后您将方便地在 我的关注中得到本文献的被引频次变化的通知！ 新浪微博 腾讯微博 人人网 开心网 豆瓣网 网易微博 摘????要： 在分析超塑性金属材料现状及发展趋势的基础上, 对低中碳钢、高碳钢和双相不锈钢、奥氏体钢等钢铁材料的超塑性研究进行了归纳分析, 提出了低成本量大面广低中碳合金钢将成为超塑性材料研发的一个重要方向。研究结果表明, 通过科学合金化设计、精细组织调控和初步超塑性行为研究, 可以获得在10-2/s应变速率和750850℃下具有1 000%超塑性的低成本超塑性低中碳合金钢。这种优异超塑性性能主要归因于形成超细晶组织的合金化设计与组织调控。该研究成果打破传统低中碳钢不具有超塑性的局面, 实现了可工业化超塑性能的低中碳合金钢创新发展, 将推动超塑性钢材在航空航天和交通运输等领域的广泛应用。 关键词： 超塑性; 低中碳合金钢; 高应变速率超塑性; 工业化; 作者简介：曹文全 (1969—) , 男, 博士, 教授级高级工程师;E-mail:caowenquan@; 收稿日期：2017-04-12 基金：国家自然科学基金资助项目 Status of superplastic materials and research and development of new superplastic low to medium carbon alloy steel CAO Wen-quan ZHANG Wan-li XU Hai-feng WENG Yu-qing Institute for Special Steels, Central Iron and Steel Research Institute; Abstract： Based on the analysis of the ART and status of the superplasticity of metallic materials, the superplastic behaviors of the steels, such as low to medium carbon steel, the high carbon steel, the duplex stainless steel and the austenitic steel, were reviewed and thus superplasticity of the low to medium carbon alloy steel with biggest quantity for application would be one of the important direction of the superplastic materials. The results indicate that the superplasticity of1 000% failure elongation can be obtained at strain rate of 10-2/s and deformation temperature of 750-850 ℃ in the low cost and low to medium carbon alloy steel. This excellent superplasticity of our newly developed steel could be attributed to the new alloying design and microstructure control to develop ultrafine microstructure. This finding has broken the status that the conventional low to medium carbon steel has no superplasticity, realizes the innovative development of the superplastic low to medium carbon alloy steel with commercial application potential, and thus would initiate its widely application in the fields of communication, aeronautic and astronautic industries. Ke