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Liquid metal embrittlement (also known as LME and liquid metal induced embrittlement) is a phenomenon of practical importance, where certain ductile metals experience drastic loss in tensile ductility or undergo brittle fracture when exposed to specific liquid metals.
The embrittler can be either solid or liquid (liquid metal embrittlement). Under sufficient tensile stress , MIE failure occurs instantaneously at temperatures just above melting point. For temperatures below the melting temperature of the embrittler, solid-state diffusion is the main transport mechanism. [ 1 ]
Yet this mechanism is much slower than that of liquid metal embrittlement (LME), suggesting that it directs a flow of atoms both towards and away from the crack. For neutron embrittlement, the main mechanism is collisions within the material from the fission byproducts.
Hydrogen embrittlement (HE), also known as hydrogen-assisted cracking or hydrogen-induced cracking (HIC), is a reduction in the ductility of a metal due to absorbed hydrogen. Hydrogen atoms are small and can permeate solid metals.
Types of wear are identified by relative motion, the nature of disturbance at the worn surface or "mechanism", and whether it effects a self regenerative or base layer. [6] Wear mechanisms are the physical disturbance. For example, the mechanism of adhesive wear is adhesion. Wear mechanisms and/or sub-mechanisms frequently overlap and occur in ...
Liquid metal embrittlement; Mechanical overload; Metal-induced embrittlement; Stress corrosion cracking; Sulfide stress cracking; Thermal shock; Wear; Yielding
Liquid metal embrittlement; Mechanical overload; Metal-induced embrittlement; ... The mechanisms are discussed in article on aerosol deposition. Corrosion fouling
Two-step embrittlement typically occurs by aging the metal within a critical temperature range, or by slowly cooling it through that range, For carbon steel, this is typically between 370 °C (698 °F) and 560 °C (1,040 °F), although impurities like phosphorus and sulfur increase the effect dramatically. This generally occurs because the ...