A workpiece resistant to hydrogen embrittlement using pores and its preparation method

By setting pores inside the workpiece as hydrogen traps and utilizing the high binding energy of the pores to capture hydrogen, the problem of increased costs in traditional methods is solved, achieving low-cost anti-hydrogen embrittlement effect, which is applicable to a variety of materials.

CN119016729BActive Publication Date: 2026-05-26SOUTHERN UNIVERSITY OF SCIENCE AND TECHNOLOGY
View PDF 1 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTHERN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Filing Date
2024-07-19
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Existing technologies that improve resistance to hydrogen embrittlement by adding specific microalloying elements increase the cost of materials and require consideration of the compatibility between the alloying elements and the material matrix.

Method used

Holes are set inside the workpiece as hydrogen traps. The high binding energy of the holes is used to capture hydrogen, reduce the hydrogen concentration inside the workpiece, and avoid hydrogen embrittlement. The distribution of holes is precisely controlled by additive manufacturing.

Benefits of technology

It effectively alleviates hydrogen embrittlement of workpieces, reduces material costs, and does not require consideration of alloy element compatibility, thus having broad application value.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN119016729B_ABST
    Figure CN119016729B_ABST
Patent Text Reader

Abstract

This invention relates to the field of hydrogen embrittlement resistant workpieces, and provides a workpiece utilizing pores to resist hydrogen embrittlement and its preparation method. The preparation method includes a workpiece forming step: forming the workpiece and making the surface and / or interior of the workpiece have pores that act as hydrogen traps. The surface and / or interior of the workpiece have pores that act as hydrogen traps. The workpiece and its preparation method provided by this invention utilize pores to resist hydrogen embrittlement, by pre-setting pores within the workpiece as hydrogen traps. The pores that exist inside the workpiece beforehand have a higher binding energy with hydrogen, so hydrogen will preferentially diffuse into the internal pores during diffusion, thereby reducing the hydrogen concentration inside the workpiece and effectively alleviating hydrogen embrittlement. It does not require the addition of specific microalloying elements to improve the material's resistance to hydrogen embrittlement, and it does not need to consider the compatibility of the added elements with the material matrix, thus not being limited to one or a few fixed materials, greatly reducing application costs and having broad promotion and application value.
Need to check novelty before this filing date? Find Prior Art