工程科学学报，第37卷，第2期：190-195,2015年2月 Chinese Journal of Engineering,Vol.37,No.2:190-195,February 2015 D0I:10.13374/j.issn2095-9389.2015.02.009:htp:/journals..ustb.edu.cn 热处理对奥氏体不锈钢00Cr24Ni13铸坯高温热塑性 的影响 舒 玮区，李俊”，廉晓洁”，王学敏) 1)太原钢铁（集团）有限公司先进不锈钢材料国家重点实验室，太原0300032)北京科技大学材料科学与工程学院，北京100083 ☒通信作者，E-mail:shuwei(@tisco..com.cm 摘要采用热处理实验方法，同时结合热模拟压缩和热模拟拉伸试验，研究了热处理对奥氏体不锈钢00C24N13铸坯高 温热塑性的影响.实验结果表明：热处理能够明显改变实验钢铸坯中8铁素体的形貌：经1200℃保温3h空冷后，原始铸坯中 存在的大面积连续网状δ铁素体完全转变为弥散分布的细小颗粒状组织.具有颗粒状8铁素体的热处理试样与热处理前相 比，不同温度压缩时的变形抗力略有增加，但并没有急剧恶化：热模拟抗拉强度基本保持不变：相同温度下的断面收缩率(Z) 显著提高，其中Z≥60%的温度区间由1150~1280℃扩展为1050~1300℃，高塑性(Z≥80%)温度范围在150℃左右(1150~ 1300℃). 关键词奥氏体不锈钢：热处理；热模拟：高温；塑性 分类号TG142.71:TG156.1 Effect of heat treatment on the high temperature ductility of 00Cr24Nil3 austenitic stainless steel casting billets SHU Wei),LI Jun,LIAN Xiao-jie,WANG Xue-min2) 1)State Key Laboratory of Advanced Stainless Steels,Taiyuan Iron Steel (Group)Co.,Ld.,Taiyuan 030003,China 2)School of Materials Science and Engineering,University of Seience and Technology Beijing,Beijing 100083,China Corresponding author,E-mail:shuwei@tisco.com.cn ABSTRACT The effect of heat treatment on the high temperature ductility of 00Cr24Nil3 austenitic stainless steel casting billets was investigated by heat treatment experiment,thermo-compression test and thermal tensile test.The result showed that 8 ferrite morpholo- gy in the casting billet could be significantly changed through the heat treatment process.After air cooling from 1200C for 3h,large area of continuous reticular 8 ferrite in the casting billet completely changed into dispersed granular phases.Compared with the casting billet before heat treatment,heat-treated samples which are composed of granular ferrite had a higher value of deformation resistance at different compression temperatures,but there was no sharp deterioration in deformation resistance,the thermal simulation tensile strength remained almost the same and the reduction of area (Z)at the same temperature increased obviously.The temperature region ofZ≥60%extended from1150-1280℃to1050-1300℃，and the high plasticity(Z≥80%)range is about150℃(1150-1300 ℃). KEY WORDS austenitic stainless steel:heat treatment;thermal simulation:high temperature:ductility 作为一种奥氏体不锈钢，00C24N13的成分特点素体能够有效避免不锈钢铸坯在凝固过程中产生热脆 w(Cr)=24%、1w(Ni)=13%)导致其含有12%~16% 现象，此外还能降低焊接时的热裂纹倾向，提高焊缝的 的8铁素体-习.多年研究表明，奥氏体不锈钢中8铁 强度和耐蚀性B.但是，δ铁素体的存在也会恶化奥 收稿日期：2013-1008工程科学学报，第 37 卷，第 2 期: 190--195，2015 年 2 月 Chinese Journal of Engineering，Vol． 37，No． 2: 190--195，February 2015 DOI: 10． 13374 /j． issn2095--9389． 2015． 02． 009; http: / /journals． ustb． edu． cn 热处理对奥氏体不锈钢 00Cr24Ni13 铸坯高温热塑性 的影响 舒 玮1) ，李 俊1) ，廉晓洁1) ，王学敏2) 1) 太原钢铁( 集团) 有限公司先进不锈钢材料国家重点实验室，太原 030003 2) 北京科技大学材料科学与工程学院，北京 100083  通信作者，E-mail: shuwei@ tisco． com． cn 摘 要 采用热处理实验方法，同时结合热模拟压缩和热模拟拉伸试验，研究了热处理对奥氏体不锈钢 00Cr24Ni13 铸坯高 温热塑性的影响． 实验结果表明: 热处理能够明显改变实验钢铸坯中 δ 铁素体的形貌; 经 1200 ℃保温 3 h 空冷后，原始铸坯中 存在的大面积连续网状 δ 铁素体完全转变为弥散分布的细小颗粒状组织． 具有颗粒状 δ 铁素体的热处理试样与热处理前相 比，不同温度压缩时的变形抗力略有增加，但并没有急剧恶化; 热模拟抗拉强度基本保持不变; 相同温度下的断面收缩率( Z) 显著提高，其中 Z≥60% 的温度区间由 1150 ～ 1280 ℃扩展为 1050 ～ 1300 ℃，高塑性( Z≥80% ) 温度范围在 150 ℃左右( 1150 ～ 1300 ℃ ) ． 关键词 奥氏体不锈钢; 热处理; 热模拟; 高温; 塑性 分类号 TG142. 71; TG156. 1 Effect of heat treatment on the high temperature ductility of 00Cr24Ni13 austenitic stainless steel casting billets SHU Wei1)  ，LI Jun1) ，LIAN Xiao-jie1) ，WANG Xue-min2) 1) State Key Laboratory of Advanced Stainless Steels，Taiyuan Iron ＆ Steel ( Group) Co． ，Ltd． ，Taiyuan 030003，China 2) School of Materials Science and Engineering，University of Science and Technology Beijing，Beijing 100083，China  Corresponding author，E-mail: shuwei@ tisco． com． cn ABSTＲACT The effect of heat treatment on the high temperature ductility of 00Cr24Ni13 austenitic stainless steel casting billets was investigated by heat treatment experiment，thermo-compression test and thermal tensile test． The result showed that δ ferrite morpholo￾gy in the casting billet could be significantly changed through the heat treatment process． After air cooling from 1200 ℃ for 3 h，large area of continuous reticular δ ferrite in the casting billet completely changed into dispersed granular phases． Compared with the casting billet before heat treatment，heat-treated samples which are composed of granular δ ferrite had a higher value of deformation resistance at different compression temperatures，but there was no sharp deterioration in deformation resistance，the thermal simulation tensile strength remained almost the same and the reduction of area ( Z) at the same temperature increased obviously． The temperature region of Z≥60% extended from 1150--1280 ℃ to 1050--1300 ℃，and the high plasticity ( Z≥80% ) range is about 150 ℃ ( 1150--1300 ℃ ) ． KEY WOＲDS austenitic stainless steel; heat treatment; thermal simulation; high temperature; ductility 收稿日期: 2013--10--08 作为一种奥氏体不锈钢，00Cr24Ni13 的成分特点 w( Cr) = 24% 、w( Ni) = 13% ) 导致其含有 12% ～ 16% 的 δ 铁素体［1 － 2］． 多年研究表明，奥氏体不锈钢中 δ 铁 素体能够有效避免不锈钢铸坯在凝固过程中产生热脆 现象，此外还能降低焊接时的热裂纹倾向，提高焊缝的 强度和耐蚀性［3 － 5］． 但是，δ 铁素体的存在也会恶化奥