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  2. Non-metallic inclusions - Wikipedia

    en.wikipedia.org/wiki/Non-metallic_inclusions

    Inclusions are present in any steel to a greater or lesser extent according to the mixture and conditions of production. Usually the amount of non-metallic inclusions in steel is not higher than 0.1%. However, the number of inclusions in metal is very high because of their extremely small size. Non-metallic inclusions in steel are foreign ...

  3. White etching cracks - Wikipedia

    en.wikipedia.org/wiki/White_etching_cracks

    WEC initiation at MnS inclusions in steel [1]. White etching cracks (WEC), or white structure flaking or brittle flaking, is a type of rolling contact fatigue (RCF) damage that can occur in bearing steels under certain conditions, such as hydrogen embrittlement, high stress, inadequate lubrication, and high temperature.

  4. Stress concentration - Wikipedia

    en.wikipedia.org/wiki/Stress_concentration

    In practice, however, material inconsistencies such as internal cracks, blowholes, cavities in welds, air holes in metal parts, and non-metallic or foreign inclusions can occur. These defects act as discontinuities within the component, disrupting the uniform distribution of stress and thereby leading to stress concentration.

  5. Deoxidization - Wikipedia

    en.wikipedia.org/wiki/Deoxidization

    If steel is not properly deoxidized, it will have lost various properties such as tensile strength, ductility, toughness, weldability, polishability, and machinability. This is due to forming non-metallic inclusions and gas pores, bubbles of gas that get trapped during the solidification process of steel. [2]

  6. Acicular ferrite - Wikipedia

    en.wikipedia.org/wiki/Acicular_ferrite

    In C-Mn steel weld metals, it is reported that nucleation of various ferrite morphologies is aided by non-metallic inclusion; in particular oxygen-rich inclusions of a certain type and size are associated with the intragranular nucleation of acicular ferrite.

  7. NFL playoff watchability rankings: Which wild-card game is best?

    www.aol.com/nfl-playoff-watchability-rankings...

    The NFL's six wild-card games feature some potentially entertaining affairs – and maybe a few duds along the way to boot.

  8. Deoxidized steel - Wikipedia

    en.wikipedia.org/wiki/Deoxidized_steel

    As steel cools, excess oxygen can cause blowholes or precipitate FeO. Therefore, several strategies have been developed for deoxidation . This may be accomplished by adding metallic deoxidizing agents to the melt either before or after it is tapped, or by vacuum treatment, in which carbon dissolved in the steel is the deoxidizer.

  9. Doctors Say This Is How You Can Loosen and Clear Mucus From ...

    www.aol.com/doctors-loosen-clear-mucus-chest...

    Other causes can include acid reflux, asthma, allergies, or other chronic medical conditions, adds Richard Watkins, M.D., an infectious disease physician and professor of medicine at the Northeast ...