the most modern steel

Nebulae said:
Ha Me2, I was gonna post somthin about steels with super high nickle and manganese content that require Cryo treatment to become magnetic, but decided it wasnt pertanent, huh I was wrong.
Click to expand...

It still wasnt pertinent, but I was just being a knowitall.
 
Early man learned by chance that particles of metal could be joined together by hammering, resulting in a solid metallic
structure. Powder metallurgy was first utilized in 3000 BC in the form of sponge iron, and afterwards the technology was lost for a long time. From "History of Powder Metallurgy":

"Long before furnaces were developed that could approach the melting point of metal, P/M principles were used. About
3000 B.C., the Egyptians used a "sponge iron" for making tools. In this early process, iron oxide was heated in a charcoal
and crushed shell fire, which was intensified by air blasts from bellows to reduce the oxide to a spongy metallic iron. The
resulting hot sponge iron was then hammered to weld the particles together. Final shapes were obtained by simple forging
procedures. Although the product often contained large amounts of nonmetallic impurities, some remarkably solid and
sound structures have been discovered (Ref 1).

W.D. Jones (Ref 2) wrote of a process modification developed by African tribes. After reduction, the sponge was broken
into powder particles, washed, and sorted by hand to remove as much of the slag and gangue as possible. The powder was
then either compacted or sintered into a porous material, which was subsequently forged.
Powder metallurgy practices were used by the Incas and their predecessors in making platinum before Columbus made
his voyage to the "New World" in 1492. The technique used was based on the cementing action of a lower melting binder,
a technique similar to the present practice of making sintered carbides.

The technique consisted of cementing platinum grains (separated from the ore by washing and selection) by the addition
of an oxidation-resistant gold-silver alloy of a fairly low melting point to wet the grains, drawing them together by surface
tension and forming a raw ingot suitable for further handling (Ref 3).

A color change from the yellow of the sintered material to the whitish platinum of the final metal was caused by diffusion
during heating prior to working. Heating is thought to have been accomplished by means of charcoal fires fanned by
blowpipes. Analyses of these alloys vary considerably. The platinum content ranged from 26 to 72%, and the gold content
ranged from 16 to 64%. Silver additions were found to vary from 3 to 15%, and amounts of copper up to 4% were traced."
 
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cotdt said:
Early man learned by chance that particles of metal could be joined together by hammering, resulting in a solid metallic
structure. Powder metallurgy was first utilized in 3000 BC in the form of sponge iron, and afterwards the technology was lost for a long time. From "History of Powder Metallurgy":

"Long before furnaces were developed that could approach the melting point of metal, P/M principles were used. About
3000 B.C., the Egyptians used a "sponge iron" for making tools. In this early process, iron oxide was heated in a charcoal
and crushed shell fire, which was intensified by air blasts from bellows to reduce the oxide to a spongy metallic iron. The
resulting hot sponge iron was then hammered to weld the particles together. Final shapes were obtained by simple forging
procedures. Although the product often contained large amounts of nonmetallic impurities, some remarkably solid and
sound structures have been discovered (Ref 1).

W.D. Jones (Ref 2) wrote of a process modification developed by African tribes. After reduction, the sponge was broken
into powder particles, washed, and sorted by hand to remove as much of the slag and gangue as possible. The powder was
then either compacted or sintered into a porous material, which was subsequently forged.
Powder metallurgy practices were used by the Incas and their predecessors in making platinum before Columbus made
his voyage to the "New World" in 1492. The technique used was based on the cementing action of a lower melting binder,
a technique similar to the present practice of making sintered carbides.

The technique consisted of cementing platinum grains (separated from the ore by washing and selection) by the addition
of an oxidation-resistant gold-silver alloy of a fairly low melting point to wet the grains, drawing them together by surface
tension and forming a raw ingot suitable for further handling (Ref 3).

A color change from the yellow of the sintered material to the whitish platinum of the final metal was caused by diffusion
during heating prior to working. Heating is thought to have been accomplished by means of charcoal fires fanned by
blowpipes. Analyses of these alloys vary considerably. The platinum content ranged from 26 to 72%, and the gold content
ranged from 16 to 64%. Silver additions were found to vary from 3 to 15%, and amounts of copper up to 4% were traced."
Click to expand...


i appologize and shall change it to reflect that
 
just a couple of things I saw but feel free to ignore me.
might want to mention that obsidian and flint make some of the sharpest blades know to man, but cant reallly be sharpened.
depending on how long it is supposed to be you could spend some time on more Wootz. Wootz is still not fully understood, and is the source for modern metallurgy. Europeans saw and heard of miraculous tales, and tried to reproduce it essentially developing modern Metallurgy. again also depending on intended length you may mention how our society has demonized the knife as a weapon (check out Knife laws forum)
 
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Hi Seany,

Human evolution can be traced to and followed the development of the "edge". A "thing" used to separate matter, ward off enemies and kill prey.

the "edge" began with a rock, then brass, bronze, iron, steel, etc. Through all of the materials, the "edge" has remained. All of the new "super" materials to are trying to improve on the edge".

Edge retention, corrosion resistance and toughness are the three main goals.

Some of the most recent innovations in materials to improve edges would include:

Powdered metals
Processes that refine steel such as VIM VAR
Nitrogen steels
Titanium alloys
Friction forging
Metal injection molding.

sal
 
Nebulae said:
just a couple of things I saw but feel free to ignore me.
might want to mention that obsidian and flint make some of the sharpest blades know to man, but cant reallly be sharpened.
depending on how long it is supposed to be you could spend some time on more Wootz. Wootz is still not fully understood, and is the source for modern metallurgy. Europeans saw and heard of miraculous tales, and tried to reproduce it essentially developing modern Metallurgy. again also depending on intended length you may mention how our society has demonized the knife as a weapon (check out Knife laws forum)
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ok ill try to correct the thing with wootz and my teach said dont include obsidian because Habilis never used it but if you can think of a way i can include it i will sorry:(
 
Sal Glesser said:
Hi Seany,

Human evolution can be traced to and followed the development of the "edge". A "thing" used to separate matter, ward off enemies and kill prey.

the "edge" began with a rock, then brass, bronze, iron, steel, etc. Through all of the materials, the "edge" has remained. All of the new "super" materials to are trying to improve on the edge".

Edge retention, corrosion resistance and toughness are the three main goals.

Some of the most recent innovations in materials to improve edges would include:

Powdered metals
Processes that refine steel such as VIM VAR
Nitrogen steels
Titanium alloys
Friction forging
Metal injection molding.

sal
Click to expand...
ok so just to make sure i know what you are telling me is that the edge i should include because it has always been there and most things are to improve it? sorry if i come across wrong i just want to make sure i understand you sorry
 
abstipositivly your the one with most of the information (length specifics, teacher, etc) we are just the peanut gallery
 
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I'd think newest steels are CPM steels and PM steels. ESR has been around for a while as far as I know, at least compared to those two technologies. And high nitrogen alloys, but there's only a handful of those and not sure if any of them was ever used in a knife.
 
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