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Zr-Sn-Nb-Fe-Cr合金热变形行为及加工图
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西安西部新锆科技股份有限公司,陕西 西安 710016

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中核集团青年英才基金CNNC-SFTYS-202201


Hot Deformation Behavior and Processing Map of Zr-Sn-Nb-Fe-Cr Alloy
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Xi 'an Western Energy Material Technologies Co., Ltd, Xi 'an 710016, China

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CNNC Youth Talent Program (CNNC-SFTYS-202201)

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    摘要:

    通过Gleeble3800单轴热压缩实验,研究了感应淬火态Zr-Sn-Nb-Fe-Cr合金锻棒在600–900 ℃温度范围内和应变速率为0.001– 1 s-1范围内的热变形特性。结果表明:在感应淬火态Zr-Sn-Nb-Fe-Cr合金锻棒的真应力-真应变曲线中,流变应力随应变速率的降低和变形温度的升高而减小。且该材料的热变形特性可以采用双曲正弦本构方程来描述,在本实验条件下,该合金的平均热激活能 Q=412.9105 kJ/mol。热加工图和热压缩后样品的微观组织分析表明,在600–900 ℃的温度范围和0.001–1 s-1的应变速率范围内,该合金的最佳热加工参数为795–900 ℃,0.001–0.0068 s-1

    Abstract:

    The hot deformation characteristics of induction quenched Zr-Sn-Nb-Fe-Cr alloy forged rod in the temperature range of 600–900 °C and strain rate range of 0.001–1 s-1 were studied by Gleeble3800 uniaxial hot compression experiment. The results show that the flow stress decreases with the decrease in strain rate and the increase in deformation temperature in the true stress-true strain curve of Zr-Sn-Nb-Fe-Cr alloy forged rod. Moreover, the hot deformation characteristics of the material can be described by the hyperbolic sine constitutive equation. Under the experimental conditions, the average thermal activation energy (Q) of the alloy was 412.9105 kJ/mol. The microstructure analysis of the processing map and the sample after hot compression shows that the optimum hot working parameters of the alloy are 795–900 °C, 0.001–0.0068 s-1, at the deformation temperature of 600–900 °C, and the strain rate of 0.001–1 s-1.

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李宇力,李豪,陈秋羽,周宣,马天洋,孙涛涛.Zr-Sn-Nb-Fe-Cr合金热变形行为及加工图[J].稀有金属材料与工程,2025,54(7):1671~1677.[Li Yuli, Li Hao, Chen Qiuyu, Zhou Xuan, Ma Tianyang, Sun Taotao. Hot Deformation Behavior and Processing Map of Zr-Sn-Nb-Fe-Cr Alloy[J]. Rare Metal Materials and Engineering,2025,54(7):1671~1677.]
DOI:10.12442/j. issn.1002-185X.20240519

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  • 收稿日期:2024-08-14
  • 最后修改日期:2024-09-20
  • 录用日期:2024-09-27
  • 在线发布日期: 2025-07-01
  • 出版日期: 2025-06-23