用于连接异种材料的过渡层的设计方法

By designing a multi-component transition layer material and controlling the gradients of cell parameters and thermophysical parameters, the problem of brittle intermetallic compounds in dissimilar material welding was solved, achieving high strength and high toughness of dissimilar material welded joints.

CN122174510BActive Publication Date: 2026-07-17SUZHOU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SUZHOU UNIV
Filing Date
2026-05-07
Publication Date
2026-07-17

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Abstract

本发明涉及用于连接异种材料的过渡层的设计方法，属于异种金属焊接技术领域。本发明的设计方法包括以下步骤：S1、采用热动力学软件计算待焊接异种材料的晶胞参数和热物性参数，确定梯度区间；S2、采用精确Muffin‑Tin轨道‑相干势近似方法设计并筛选出符合要求的过渡层材料；S3、调控过渡层的组元种类与含量并划分为若干层；S4、根据梯度区间进行排列组合，形成晶胞参数、热物性参数梯度；S5、进行焊连接。通过多层过渡层的设计，实现大差异异种材料的可靠连接。同时，通过减小过渡层的成分梯度，从而有效降低热物性参数梯度差异和降低焊接接头中的残余应力水平，提高接头的耐腐蚀能力和疲劳性能。
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