Hydrogen (H) embrittlement in high-strength steels can be mitigated by introducing H traps into the microstructure. The co-precipitation model steel in this work contains intermetallic ß-NiAl and secondary Cr-carbides, which provide abundant trapping sites. Needle-shaped specimens are prepared for atom probe tomography (APT) and electro-chemically charged in a solution of 0.1 M NaOH in D₂O to introduce deuterium (D). D is located at the finely dispersed Cr-carbides even after specimen transfer at room temperature (RT), which shows that nano-sized Cr-carbides are strong H traps. This is in contrast to previous studies of weak traps where cryogenic transfer was needed to detect any D.

通过在微观结构中引入 H 陷阱，可以减轻高强度钢中的氢 (H) 脆化。这项工作中的共沉淀模型钢含有金属间化合物 ß-NiAl 和二次 Cr-碳化物，提供了丰富的捕获位点。_{准备用于原子探针断层扫描 (APT) 的针形样品，并在 0.1 M NaOH 的 D 2} O溶液中进行电化学充电以引入氘 (D)。即使在室温 (RT) 下转移样品后，D 仍位于细分散的 Cr-碳化物处，这表明纳米尺寸的 Cr-碳化物是强 H 陷阱。这与之前对弱陷阱的研究形成鲜明对比，在弱陷阱中需要低温转移来检测任何 D.