The effect of electropulsing on the corrosion cracking of titanium aluminide produced by self-propagating high-temperature synthesis has been investigated. The electropulsing treatment led to improved corrosion resistance in sodium fluoride solution and also eliminated corrosion cracking at the α₂/γ interface during corrosion in a solution of nitric and hydrofluoric acids. This behavior was attributed to thermal and athermal effects resulting from electropulsing and leading to the interaction of conduction electrons with the defect structure. The effect of magnetic field accompanying electropusling on depinning of dislocations also has been discussed. Support for this is provided on the basis of X-ray diffraction analysis and microhardness testing.

中文翻译：

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高密度电流电脉冲对铝化钛金属间化合物腐蚀开裂的影响

研究了电脉冲对自蔓延高温合成铝化钛腐蚀开裂的影响。电脉冲处理提高了在氟化钠溶液中的耐腐蚀性，并消除了在硝酸和氢氟酸溶液中腐蚀期间α ₂ /γ 界面处的腐蚀开裂。这种行为归因于由电脉冲引起的热效应和非热效应，并导致传导电子与缺陷结构的相互作用。还讨论了伴随电脉冲的磁场对位错脱钉的影响。X 射线衍射分析和显微硬度测试对此提供了支持。