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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Mitigating Barrel Whip and Harmonics
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<blockquote data-quote="DSheetz" data-source="post: 1772002" data-attributes="member: 91783"><p>Shep , I hope you are doing better . Metallurgy is some interesting stuff I know that heat treating causes the grain boundaries to change by bringing them back to a rounded shape and getting rid of the carbides that form around the grains as they cool fast as well as the graphite that is formed when the metal is melted . Hydrogen can be introduced from the atmosphere if we don't have proper shielding around the molten puddle or if water is present when welding then we get hydrogen surrounding the grain boundaries causing hydrogen embrittlement at around 800 degrees F . I don't know how ultrasound works on the grain boundaries to change this , but this would be interesting to study .</p></blockquote><p></p>
[QUOTE="DSheetz, post: 1772002, member: 91783"] Shep , I hope you are doing better . Metallurgy is some interesting stuff I know that heat treating causes the grain boundaries to change by bringing them back to a rounded shape and getting rid of the carbides that form around the grains as they cool fast as well as the graphite that is formed when the metal is melted . Hydrogen can be introduced from the atmosphere if we don't have proper shielding around the molten puddle or if water is present when welding then we get hydrogen surrounding the grain boundaries causing hydrogen embrittlement at around 800 degrees F . I don't know how ultrasound works on the grain boundaries to change this , but this would be interesting to study . [/QUOTE]
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Rifles, Reloading, Optics, Equipment
Rifles, Bullets, Barrels & Ballistics
Mitigating Barrel Whip and Harmonics
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