[1]罗锦华,朱燕丽,侯峰起,等.热轧温度对TC20合金坯料冷轧成形性的影响[J].中国材料进展,2018,(07):026-30.[doi:10.7502/j.issn.1674-3962.2018.07.06]
 LUO Jinhua,ZHU Yanli,HOU Fengqi,et al.Effect of Hot Rolling Temperature on Cold Roll Formability of TC20 Alloy[J].MATERIALS CHINA,2018,(07):026-30.[doi:10.7502/j.issn.1674-3962.2018.07.06]
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热轧温度对TC20合金坯料冷轧成形性的影响()
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中国材料进展[ISSN:1674-3962/CN:61-1473/TG]

卷:
期数:
2018年第07期
页码:
026-30
栏目:
研究报告
出版日期:
2018-07-31

文章信息/Info

Title:
Effect of Hot Rolling Temperature on Cold Roll Formability of TC20 Alloy
作者:
罗锦华1朱燕丽12侯峰起1张铁邦2田成1李英浩1
(1.西部超导材料科技股份有限公司,陕西 西安 710018)(2.西北工业大学材料学院,陕西 西安 710072)
Author(s):
LUO Jinhua1 ZHU Yanli12 HOU Fengqi1 ZHANG Tiebang2 TIAN Cheng1 LI Yinghao1
(1. Western Superconducting Technologies Co, Ltd, Xian 710018, China)(2. School of Materials Science and Engineering, Northwestern Polytechnical University, Xian 710072, China)
关键词:
TC20钛合金热轧温度冷轧成形性显微组织室温压缩
Keywords:
TC20 titanium alloy hot rolling temperature cold roll formability microstructure room temperature compression
DOI:
10.7502/j.issn.1674-3962.2018.07.06
文献标志码:
A
摘要:
研究了在1000,940,850 ℃不同温度热轧的TC20合金坯料在冷连轧过程中的变形与失稳情况,结合热轧棒材组织和室温压缩的实验结果,表明:热轧温度越低,冷轧成形性越差。850 ℃热轧的TC20合金棒坯纵向组织中α相呈连续纤维状,冷连轧成形性比较差,极限变形量仅40%左右;1000 ℃的热轧坯料组织中β相占比增加,冷连轧变形量可以达到60%,同时,其室温压缩实验过程中断裂压缩率高,塑性变形阶段加工硬化速率较小。通过室温压缩实验可直观评价TC20合金丝材的冷轧成形性能。
Abstract:
In this paper, the deformation and destabilization of cold rolling TC20 alloy bars which were hotrolled at 1000, 940 and 850 ℃, were analyzed and compared. Combined with the microstructure of hotrolled bars and room temperature compression experiments, the result showed that the lower hotrolling temperature, the poorer the coldrolling formability. The bar hotrolled at 850 ℃ possessed the longitudinal microstructure of continuous fibrous αphase, and cold deformation property was poor, about 40%. The bar hotrolled at 1000 ℃ possessed more βphase, the cold deformation reached up to 60%, and showed higher compression rate and lower workhardening rate. The coldrolling formability of TC20 alloy bar had a strong correlation with its room temperature compression performance, the bars with higher compression rate and lower hardening rate in the plastic deformation stage had better cold roll formability.
更新日期/Last Update: 2018-08-08