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Define Hydrogen Embrittlement
"On Hydrogen Embrittlement"
Hydrogen embrittlement is also a phenomenon in which the mechanical properties of metal materials are deteriorated due to the action of hydrogen. Hydrogen, which exists in metal materials, or in atomic or ionic states, enters the metal lattice, causing lattice distortion, which in turn affects the properties of the material.
The source of hydrogen is multi-way. During metal smelting, hydrogen is contained in the raw material, or the smelting environment causes hydrogen to invade; material processing, such as electroplating, pickling and other processes, can also introduce hydrogen. After hydrogen enters the metal, it may accumulate in the lattice gap, or interact with metal atoms.
Hydrogen embrittlement is commonly characterized by reduced toughness and ductility of the material, and increased brittleness. When subjected to external force, the material is prone to crack initiation, and the crack propagation is rapid, causing the material to break prematurely. This phenomenon is particularly significant in high-strength steel, titanium alloy and other materials.
In order to prevent hydrogen embrittlement, efforts must be made in many aspects. In the smelting process, strict control of the hydrogen content of raw materials, optimization of smelting process, and reduction of hydrogen inhalation; in the processing process, reasonable selection of process, to avoid excessive introduction of hydrogen, and timely dehydrogenation treatment. In this way, the harm of hydrogen embrittlement can be reduced and the excellent performance of metal materials can be guaranteed.
Hydrogen embrittlement is also a phenomenon in which the mechanical properties of metal materials are deteriorated due to the action of hydrogen. Hydrogen, which exists in metal materials, or in atomic or ionic states, enters the metal lattice, causing lattice distortion, which in turn affects the properties of the material.
The source of hydrogen is multi-way. During metal smelting, hydrogen is contained in the raw material, or the smelting environment causes hydrogen to invade; material processing, such as electroplating, pickling and other processes, can also introduce hydrogen. After hydrogen enters the metal, it may accumulate in the lattice gap, or interact with metal atoms.
Hydrogen embrittlement is commonly characterized by reduced toughness and ductility of the material, and increased brittleness. When subjected to external force, the material is prone to crack initiation, and the crack propagation is rapid, causing the material to break prematurely. This phenomenon is particularly significant in high-strength steel, titanium alloy and other materials.
In order to prevent hydrogen embrittlement, efforts must be made in many aspects. In the smelting process, strict control of the hydrogen content of raw materials, optimization of smelting process, and reduction of hydrogen inhalation; in the processing process, reasonable selection of process, to avoid excessive introduction of hydrogen, and timely dehydrogenation treatment. In this way, the harm of hydrogen embrittlement can be reduced and the excellent performance of metal materials can be guaranteed.
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