Effect of Cold Rolling and Annealing Process on the Thermal Expansion Properties of Ni36 Invar Alloy

He Yangqiang; Jia Tao; Dou Xiaoyao; Wang Chuang

doi:10.20057/j.1003-8620.2024-00281

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Effect of Cold Rolling and Annealing Process on the Thermal Expansion Properties of Ni36 Invar Alloy

Application and Service | 更新时间：2025-09-11

- Effect of Cold Rolling and Annealing Process on the Thermal Expansion Properties of Ni36 Invar Alloy
- Special Steel Vol. 46, Issue 5, Pages: 115-121(2025)
- 作者机构：
  
  1.东北大学轧制技术及连轧自动化国家重点实验室，沈阳110819
  2.浙江龙盛薄板有限公司，绍兴312369
- 作者简介：
- 基金信息：
- DOI：10.20057/j.1003-8620.2024-00281
  CLC： TG132.1
- Received：24 December 2024，
  
  Revised：2025-01-31，
  
  Accepted：12 February 2025，
  
  Published：30 September 2025
- 稿件说明：
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贺仰强,贾涛,窦晓尧等.冷轧及退火工艺对Ni36因瓦合金热膨胀性能的影响[J].特殊钢,2025,46(05):115-121.

He Yangqiang,Jia Tao,Dou Xiaoyao,et al.Effect of Cold Rolling and Annealing Process on the Thermal Expansion Properties of Ni36 Invar Alloy[J].Special Steel,2025,46(05):115-121.
贺仰强,贾涛,窦晓尧等.冷轧及退火工艺对Ni36因瓦合金热膨胀性能的影响[J].特殊钢,2025,46(05):115-121. DOI： 10.20057/j.1003-8620.2024-00281.

He Yangqiang,Jia Tao,Dou Xiaoyao,et al.Effect of Cold Rolling and Annealing Process on the Thermal Expansion Properties of Ni36 Invar Alloy[J].Special Steel,2025,46(05):115-121. DOI： 10.20057/j.1003-8620.2024-00281.

摘要

研究了Ni36因瓦合金冷轧及退火工艺对微观组织与热膨胀性能的影响。结果表明，30%~75%压下率的冷轧处理使得热膨胀系数（CTE）大幅降低，随着冷轧压下率的增加，平均热膨胀系数

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=95972642&type=

3.21733332

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=95972669&type=

8.89000034

和

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3.21733332

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=95972628&type=

8.89000034

均呈现出先减小后增加的趋势，在60%压下率时

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=95972642&type=

3.21733332

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=95972669&type=

8.89000034

达到最低，即1.43×10

-6

-1

，相比原料降低了49.8%；当退火温度由700 ℃升高到900 ℃时，

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=95972642&type=

3.21733332

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=95972669&type=

8.89000034

由2.59×10

-6

-1

逐渐升高到2.70×10

-6

-1

，而后在1 000 ℃时下

降至2.47×10

-6

-1

；在700 ℃退火不同时间内，热膨胀系数随着退火时间的增加而持续增加，

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3.21733332

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=95972669&type=

8.89000034

由退火0.5 h的2.46×10

-6

-1

增加至退火6 h的2.74×10

-6

-1

。对热膨胀系数随冷轧压下率、退火工艺变化的现象，从冷轧织构、位错与空位密度、冷轧组织的回复与再结晶和晶粒长大的不同角度进行了深入讨论与分析。

Abstract

The effects of cold rolling and annealing process on the microstructure and thermal expansion properties of Ni36 Invar alloy were studied in this work. The results show that the coefficient of thermal expansion （ abbreviated as CTE） is greatly reduced by the cold rolling treatment with a depression rate of 30%-75%. The average CTE i.e.，

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=95972644&type=

3.21733332

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=95972645&type=

9.99066734

and

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=95972658&type=

3.21733332

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=95972632&type=

9.99066734

decrease first and then increase with the increasing reduction rate of cold rolling. At reduction rate of 60%，

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3.21733332

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9.99066734

is the lowest i.e.， 1.43×10

-6

-1

， which is 49.8% lower than that of raw material.As the annealing temperature increases from 700 ℃ to 900 ℃， the

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3.21733332

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=95972645&type=

9.99066734

gradually increases from 2.59×10

-6

-1

to 2.70×10

-6

-1

， and then decreases to 2.47×10

-6

-1

at 1 000 ℃. When annealed at 700 ℃ for different period， the CTE increases continuously with the increasing time， the

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3.21733332

https://html.publish.founderss.cn/rc-pub/api/common/picture?pictureId=95972645&type=

9.99066734

increases from 2.46×10

-6

-1

at 0.5 h to 2.74×10

-6

-1

at 6 h. The variation of CTE with cold rolling and annealing process are deeply discussed and analyzed from the perspective of cold rolling texture， density of dislocation and vacancy， recovery and recrystallization of cold-rolled microstructure， and grain growth.

关键词

Keywords

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