锻压技术

冷轧TA1钛带材表面缺陷研究

英文标题：Study on surface defects for cold rolled TA1 titanium strip

作者：张明玉运新兵伏洪旺

分类号：TG337.6

出版年,卷(期):页码：2022,47(6):125-131

摘要：

针对冷轧TA1钛带材的表面缺陷，通过OM、SEM、EBSD以及维氏硬度测试来研究表面缺陷的形貌、组织和性能，分析缺陷产生的原因。结果表明：缺陷宏观表现为雪花状色差，其最大宽度为542 μm，最大高度为136 μm，位于钛带材两面，无明显对称性和周期性，且垂直于轧制方向。缺陷处裂纹内部有类似夹杂物存在，主要为Fe-Ti-O、Mg-Al-Si-O-Ti及TiC等颗粒组成的3种形态分布的物相。缺陷处晶粒的取向分布相对均匀，关键取向为<0001>//ND及<10-12>//ND，占比分别达到33.7%及21.3%。缺陷位置浅表层10~30 μm范围内存在短线状裂纹缺陷。缺陷部位与非缺陷部位的金相组织一致，显微硬度平均值分别为135.5和105.5 HV。且经分析得出裂纹产生的主要原因为内部夹杂物。

For the surface defects of cold rolled TA1 titanium strips, the morphology, microstructures and properties of surface defects were studied by OM, SEM, EBSD and Vickers hardness tests, and the causes of defects were analyzed. The results show that the macroscopic performance of the defects is snowflake color difference with the maximum width of 542 μm and the maximum height of 136 μm, which is located on both sides of titanium strip without obvious symmetry and periodicity and is perpendicular to the rolling direction. There are similar inclusions in the crack at the defect position, which are mainly the phases which are distributed in three forms composing of Fe-Ti-O, Mg-Al-Si-O-Ti and TiC particles. The grain orientation distribution at the defect position is relatively uniform, and the key orientations are <0001>//ND and <10-12>//ND, accounting for 33.7% and 21.3%, respectively. There are short linear crack defects in the superficial layer of defect position within range of 10-30 μm. The metallographic organization of the defective part are the same as that of the non-defective part, and the average values of microhardness are 135.5 and 105.5 HV respectively. After analysis, it is concluded that the main reason for cracks is internal inclusions.

基金项目：

国家自然科学基金资助项目（51675074）；辽宁省教育厅资助项目（JDL2019001）

张明玉 (1989-)，男，博士研究生 E-mail：251826123@qq.com 通信作者：运新兵 (1969-)，男，博士，教授 E-mail：yunxb@djtu.edu.cn

参考文献：

[1]Dong G L, Sangho K, Sunghak L, et al. Effects of microstructural morphology on quasi-static and dynamic deformation behavior of Ti-6Al-4V alloy [J].Metallurgical and Materials Transactions A，2001，32(2)：315-324.

[2]韩言，赵飞，万明攀，等.TC17钛合金热流变行为及组织演变机制研究[J].稀有金属，2020，44(3)：234-241.

Han Y, Zhao F, Wan M P, et al. Thermal flow behaviors and microstructure evolution of TC17 alloy[J].Chinese Journal of Rare Metals，2020，44(3): 234-241.

[3]许爱军，万海锋，梁春祖，等.低温钛合金材料应用现状及发展趋势[J].精密成形工程，2020，6(12)：145-156.

Xu A J, Wan H F, Liang C Z,et al. Application status and development trend of cryogenic titanium alloy [J].Journal of Netshape Forming Engineering，2020，6(12)：145-156.

[4]陈国琳，吴鹏炜，冷文军,等.钛合金的发展现状及应用前景[J].舰船科学技术，2009，31(12)：110-113.

Chen G L, Wu P W, Leng W J, et al. The development status and application prospects of titanium alloys[J].Ship Science and Technology，2009，31(12)：110-113.

[5]陈玉良，刘建良，黄子良，等.国内钛带卷生产现状及发展前景[J].钛工业进展，2010，27(5)：6-9.

Chen Y L, Liu J L, Huang Z L, et al. The current situation and development prospects of domestic titanium strip and coil production[J]. Progress in Titanium Industry，2010，27(5)：6-9.

[6]孙少云，陈亚鹏，金辉.钛及钛合金板带材的应用现[J].有色金属文摘，2015，30(3)：132-133.

Sun S Y, Chen Y P, Jin H. The application status of titanium and titanium alloy plates and strips[J]. Nonferrous Metals Abstracts，2015，30(3)：132-133.

[7]Hubert C, Dubar L, Dubar M, et al. Finite element simu- lation of the edge-trimming/cold rolling sequence: Analysis of edge cracking [J]. Journal of Materials Processing Technology,2012，212(5)：1049-1060.

[8]Lin D, Wang L, Meng F Q, et al. Effects of second phases on fracture behavior of Mg-10Gd-3Y-0.6Zr alloy [J].Transactions of Nonferrous Metals Society of China,2010，20：421-425.

[9]Kwon H C, Lee H W, Kim H Y,et al. Surface wrinkle defect of carbon steel in the hot bar rolling process[J].Journal of Mechanical Working Technology, 2008，209(9)：4476-4483.

[10]王瑞琴，黄先明，吴晓东，等.冷轧钛板材缺陷分析与讨论[J].热加工工艺，2014，43(13)：147-152.

Wang R Q, Huang X M, Wu X D, et al. Analysis and discussion on defects of cold rolled titanium plate[J]. Hot Working Technology，2014，43(13):147-152.

[11]何龙，张海龙，张延生.对钛及钛合金板材表面“酸斑”的探讨[J].钛工业进展，2005，22(5)：42-43.

He L, Zhang H L, Zhang Y S. Discussion on “acid spots” on the surface of titanium and titanium alloy sheets[J].Titanium Industry Progress，2005，22(5): 42-43.

[12]杨柳.TA1纯钛冷轧薄板冲压过程开裂原因分析[J].塑性工程学报，2018，25 (2): 73-78.

Yang L．Analysis on the causes of stamping cracking of TA1 pure titanium cold rolled sheet[J]. Journal of Plasticity Engineering，2018，25 (2): 73-78．

[13]付文杰，高维娜，蔡丹娜.轧制工艺对钛板质量的影响[J].热加工工艺，2015，44(19)：137-139.

Fu W J, Gao W N, Cai D N. The effect of rolling process on the quality of titanium plate[J]. Hot Working Technology, 2015，44(19)：137-139.

[14]李辉, 谢文龙, 王云, 等. TA5-A钛合金板材“表面花纹”分析与研究[J].热加工工艺，2014，43(2)：212-214.

Li H, Xie W L, Wang Y,et al. Analysis and research on “surface pattern” of TA5-A titanium alloy sheet [J].Hot Working Technology，2014，43(2)：212-214.

[15]张家铭，余伟,张泽宇.工业纯钛热轧及冷轧板表面缺陷研究[J].金属功能材料，2020，27 (1)：8-15.

Zhang J M, Yu W, Zhang Z Y. Research on surface defectsof industrial pure titanium hot-rolled and cold-rolled sheets[J].Metallic Functional Materials, 2020，27 (1)：8-15.

[16]GB/T 26060—2010, 钛及钛合金铸锭[S].

GB/T 26060—2010, Titanium and titanium alloy ingots [S].

[17]YS/T 885—2013, 钛及钛合金锻造板坯[S].

YS/T 885—2013, Titanium and titanium alloy forging slab [S].

[18]YS/T 750—2011, 热轧钛带卷[S].

YS/T 750—2011, Hot rolled titanium coil [S].

[19]QJ 1993A—2001, 钛及钛合金的热处理[S].

QJ 1993A—2001, Heat treatment of titanium and titanium alloys [S].

[20]赵永庆，洪权，葛鹏.钛及钛合金金相图谱[M].长沙：中南大学出版社，2011.

Zhao Y Q, Hong Q, Ge P. Metallographic Atlas of Titanium and Titanium Alloys[M]. Changsha: Central South University Press，2011.

[21]张飞奇，孙宝洋，李晗嫣，等.TA15钛合金真空自耗电弧熔炼过程中的富钛偏析研究[J].钛工业进展，2019，36(3)：38-41.

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