退火温度对爆炸焊接银/钢复合板中银层组织与力学性能的影响

doi:10.13251/j.issn.0254-6051.2023.08.025

金属热处理 ›› 2023, Vol. 48 ›› Issue (8): 154-160.DOI: 10.13251/j.issn.0254-6051.2023.08.025

退火温度对爆炸焊接银/钢复合板中银层组织与力学性能的影响

朱磊^1,2, 魏艺斌^1,2

1.西安天力金属复合材料股份有限公司, 陕西西安 710200;
2.国家地方联合工程研究中心, 陕西西安 710200

收稿日期:2023-04-04 修回日期:2023-06-24 出版日期:2023-08-25 发布日期:2023-10-10
作者简介:朱磊(1984—), 男, 工程师, 主要研究方向为层状金属复合材料爆炸焊接技术,E-mail: 153222492@qq.com
基金资助:
基金项目:陕西省“两链”融合重点项目-定向委托课题(2021LLRH-05-10)

Effect of annealing temperature on microstructure and mechanical properties of silver layer in silver/steel composite plate fabricated by explosive welding

Zhu Lei^1,2, Wei Yibin^1,2

1. Xi'an Tianli Clad Metal Materials Co., Ltd., Xi'an Shaanxi 710200, China;
2. State and Local Joint Engineering Research Center, Xi'an Shaanxi 710200, China

Received:2023-04-04 Revised:2023-06-24 Online:2023-08-25 Published:2023-10-10

摘要/Abstract

摘要： 采用爆炸焊接法制备了银/钢复合板,发现结合界面呈典型的爆炸态波纹形貌。在相同的保温时间下,研究不同温度退火对复合板界面银层的组织和显微硬度及界面的剪切强度的影响。结果表明,爆炸焊接产生的波纹状旋涡区内部存在着Ag、Fe混合物,在热处理降温过程中旋涡区内部产生温度梯度,使得银层晶粒在再结晶时呈现柱状晶的生长模式。随退火温度升高,Ag、Fe原子在旋涡区内部加剧扩散,导致温度梯度消失,银层晶粒向四周均匀长大。银层硬度在爆炸态达到最大值90 HV0.1左右,退火温度超过200 ℃后,银层硬度下降36％,并对退火温度敏感性降低,平均硬度始终在60 HV0.1左右。复合板的界面剪切强度在爆炸态达到最大的238 MPa,随退火温度升高,剪切强度降低,温度达到500 ℃后,剪切强度稳定在150 MPa左右,相比爆炸态强度下降37％。

关键词: 爆炸焊接, 银/钢复合板, 热处理, 界面组织

Abstract: Silver/steel composite plate with typical explosive wavy bonding interface was fabricated by explosive welding. Under the same holding time, the effect of different annealing temperatures on structure and microhardness of the silver layer and the interface shear strength of the composite plate interface was studied. The results show that there is a mixture of Ag and Fe in the wavy vortex zone generated by explosive welding, and a temperature gradient is generated in the vortex zone during the heat treatment cooling process, which makes the silver layer present a columnar grain growth mode during recrystallization. As the annealing temperature increases, the diffusion of Ag and Fe atoms intensifies within the vortex zone, leading to the disappearance of temperature gradients and the uniform growth of silver layer grains towards the surrounding areas. The hardness of the silver layer reaches its maximum around 90 HV0.1 in the explosive state. When the annealing temperature exceeds 200 ℃, the hardness of the silver layer decreases by 36% and its sensitivity to the annealing temperature decreases, with the average hardness remaining around 60 HV0.1. The interface shear strength of the composite plate reaches the maximum 238 MPa under the explosive state. With the increase of annealing temperature, the shear strength decreases. When the temperature reaches 500 ℃, the shear strength remains stable at about 150 MPa, which is 37% lower than that of the explosive state.

Key words: explosive welding, silver/steel composite plate, heat treatment, interface microstructure

中图分类号:

TG456.6

朱磊, 魏艺斌. 退火温度对爆炸焊接银/钢复合板中银层组织与力学性能的影响[J]. 金属热处理, 2023, 48(8): 154-160.

Zhu Lei, Wei Yibin. Effect of annealing temperature on microstructure and mechanical properties of silver layer in silver/steel composite plate fabricated by explosive welding[J]. Heat Treatment of Metals, 2023, 48(8): 154-160.

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退火温度对爆炸焊接银/钢复合板中银层组织与力学性能的影响

Effect of annealing temperature on microstructure and mechanical properties of silver layer in silver/steel composite plate fabricated by explosive welding

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