新型SP2215奥氏体耐热钢的室温变形行为
Room Temperature Deformation Behavior of New Heat Resistant Austenitic Steel SP2215
摘 要
对SP2215奥氏体耐热钢分别进行室温压缩（变形量10%~50%）、拉伸（变形量10%~40%）和弯曲（弯曲角度20°~180°）变形试验，研究了室温变形后的显微组织、显微硬度和强度。结果表明：SP2215钢在室温变形过程中不发生马氏体相变，具有较高的奥氏体组织稳定性，位错滑移始终参与变形；室温变形可大幅度提高SP2215钢的加工硬化程度，从而提高抗拉强度和硬度，并成倍提高其屈服强度。
冷变形
马氏体相变
滑移
加工硬化
heat resistant austenitic steel
cold deformation
martensitic transformation
slip
work hardening
Abstract
Compression (with 10%-50% deformation), tension (with 10%-40% deformation) and bending (with 20°-180° bending angle) deformation tests at room temperature were conducted on SP2215 heat resistant austenitic steel. The microstructure, microhardness and strength of the steel after room temperature deformation were studied. The results show that no martensitic transformation occurred in SP2215 steel during room temperature deformation. The steel had high austenite structure stability. Dislocation slips always took part in deformation. Room temperature deformation could greatly improve the work hardening of SP2215 steel, thereby increasing the tensile strength and hardness, and doubling the yield strength.
中图分类号 TG142.7 DOI 10.11973/jxgccl202207012
所属栏目 材料性能及应用
基金项目
收稿日期 2021/5/14
修改稿日期 2022/5/30
网络出版日期
作者单位点击查看
备注宋利(1963-),男,河南郑州人,教授级高工,学士
引用该论文: SONG Li. Room Temperature Deformation Behavior of New Heat Resistant Austenitic Steel SP2215[J]. Materials for mechancial engineering, 2022, 46(7): 64～69
宋利. 新型SP2215奥氏体耐热钢的室温变形行为[J]. 机械工程材料, 2022, 46(7): 64～69
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参考文献
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【3】杨华春,李健,曾凡伟,等.高压锅炉管的发展及应用问题探讨[J].钢管,2017,46(5):5-11. YANG H C,LI J,ZENG F W,et al.Discussion on development and application of high pressure boiler steel pipe/tube[J].Steel Pipe,2017,46(5):5-11.
【4】闫瑞峰.SP2215耐热钢瞬时液相扩散焊接头组织及性能研究[D].焦作:河南理工大学,2019. YAN R F.Microstructure and properties of SP2215 heat resistant steel transient liquid phase bonded joints[D].Jiaozuo:Henan Polytechnic University,2019.
【5】高虹,陈泽民,何周苏秦,等.超超临界火电锅炉用新型奥氏体耐热合金无缝管的研制[J].现代冶金,2020,48(4):4-11. GAO H,CHEN Z M,HE-ZHOU S Q,et al.Development of a new type of austenitic heat-resistant alloy seamless tube for ultra-supercritical thermal power boilers[J].Modern Metallurgy,2020,48(4):4-11.
【6】龚娜,武会宾,曹嘉明,等.冷变形对304奥氏体不锈钢组织和性能的影响[J].热加工工艺,2018,47(4):62-66. GONG N,WU H B,CAO J M,et al.Effect of cold deformation on structure and properties of 304 austenitic stainless steel[J].Hot Working Technology,2018,47(4):62-66.
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