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| 稀土微合金化对热管用无氧铜管坯成分及组织的影响 |
| Effects of Microalloying with Rare Earth on Composition and Microstructure of Oxygen-free Copper Tube Blank for Heat Pipe |
| Received:July 02, 2020 |
| DOI：10.3969/j.issn.1674-6457.2020.06.018 |
| 中文关键词: 热管 稀土 无氧铜 成分 组织 |
| 英文关键词: heat pipe rare earth oxygen-free copper composition microstructure |
| 基金项目:中国博士后科学基金(2019M662276);中国科学院科技服务网络计划区域重点资助项目(KFJ-STS-QYZD-145) |
| Author Name | Affiliation | | CHEN Yan | Jiangxi Copper Co., Ltd., Nanchang 330096, China
Jiangxi Copper Technology Research Academy Co., Ltd., Nanchang 330096, China
Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China | | CHEN Jin-fang | JCC Processing Business Division, Nanchang 330096, China | | TANG Xiao-shui | JCC Processing Business Division, Nanchang 330096, China | | YU Qi | JCC Processing Business Division, Nanchang 330096, China | | WANG Song-wei | Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China | | ZHANG Shi-hong | Jiangxi Copper Technology Research Academy Co., Ltd., Nanchang 330096, China
Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China | | ZENG Yan-qi | Jiangxi Copper Technology Research Academy Co., Ltd., Nanchang 330096, China |
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| 中文摘要: |
| 目的 解决连铸连轧无氧铜管坯成分与组织控制问题。方法 通过稀土净化除杂与微合金化作用，对无氧铜熔铸成分控制、水平连铸和行星轧制工艺开展深入研究。结果 稀土添加后铸坯中P的质量分数由添加前0.009 5%降低至0.001 45%~0.001 82%，降低了80.8%;O的质量分数由0.004 5%降低至0.001 3%~ 0.001 83%，降低了59.3%;铸坯晶粒尺寸由稀土添加前的2200 μm细化到到650 μm，细化了70.4%;三辊行星组织轴向平均晶粒为16 μm，周向平均晶粒为21 μm。结论 稀土微合金化能够有效控制热管用无氧铜铸坯的成分;稀土微合金化明显细化了铸坯的晶粒组织，使无氧铜轧制变形组织更加均匀。 |
| 英文摘要: |
| The work aims to solve the problems on controlling composition and microstructure of oxygen-free copper tubes by continuous casting and rolling. The controlling of cast composition, horizontal continuous casting and planetary rolling process of oxygen-free copper tube were studied in-depth by purification and microalloying with rare earth. The results showed that the mass fraction of P and O in the casting blank added with rare earth was reduced from 0.0095% to 0.001 45%-0.001 82% by 80.8% and from 0.004 5% to 0.001 3%-0.001 83% by 59.3% respectively. Moreover, the grain size of cashing blank added with rare earth was refined from 2200 μm to 650 μm by 70.4%. The axial average grain size of the three-roller planetary structure was 16 μm and the circumferential average grain size was 21 μm. The microalloying with rare earth can effectively control the composition of the oxygen-free copper for heat pipe. It apparently refines the grain size structure and makes the deformation microstructure of oxygen-free copper rolling more uniform. |
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