What is Powder Metallurgy?

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Larrin
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What is Powder Metallurgy?

Postby Larrin » Mon Aug 20, 2018 6:08 am

In this article I describe the process of powder metallurgy including:

How does powder metallurgy refine the microstructure of steel?
When was powder metallurgy invented and which company was the first to use it?
What were the early steels used with powder metallurgy and how were steels developed differently to take advantage of the technology?

https://knifesteelnerds.com/2018/08/20/ ... etallurgy/
http://www.KnifeSteelNerds.com - Steel Metallurgy topics related to knives

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curlyhairedboy
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Re: What is Powder Metallurgy?

Postby curlyhairedboy » Mon Aug 20, 2018 6:56 am

Thanks for the new article!
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Re: What is Powder Metallurgy?

Postby Eli Chaps » Mon Aug 20, 2018 7:05 am

Looking forward to reading this one Larrin.

My current existence is highly dependent on powder metallurgy (non-steel) and I'm always eager to read/learn more about the science and process!

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Re: What is Powder Metallurgy?

Postby The Meat man » Mon Aug 20, 2018 8:34 am

Great article Larrin. Thanks!
- Connor

"What is a man profited, if he shall gain the whole world, and lose his own soul?"

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dj moonbat
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Re: What is Powder Metallurgy?

Postby dj moonbat » Mon Aug 20, 2018 8:43 am

Hey, Larrin: one thing I've been wondering is whether the heat and pressure of the isostatic pressing are sufficient to realign the grain in the metal, or whether each micro-ingot's outside edge is a grain boundary for all the steel inside it.

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Larrin
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Re: What is Powder Metallurgy?

Postby Larrin » Mon Aug 20, 2018 9:10 am

dj moonbat wrote:
Mon Aug 20, 2018 8:43 am
Hey, Larrin: one thing I've been wondering is whether the heat and pressure of the isostatic pressing are sufficient to realign the grain in the metal, or whether each micro-ingot's outside edge is a grain boundary for all the steel inside it.
There are cast structures like dendrites in the powder form which include various boundaries. When it comes to the "grain direction" of the steel which is a somewhat misleading phrase since it doesn't even require grain boundaries, that is created through the forging and rolling which occurs after HIP.
http://www.KnifeSteelNerds.com - Steel Metallurgy topics related to knives

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Brown_Recluse
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Re: What is Powder Metallurgy?

Postby Brown_Recluse » Mon Aug 20, 2018 3:44 pm

Great article! I had always wondered what "powder metallurgy" alluded to. Very informative and educational. Thank you!
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Larrin
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Re: What is Powder Metallurgy?

Postby Larrin » Mon Aug 20, 2018 6:21 pm

Brown_Recluse wrote:
Mon Aug 20, 2018 3:44 pm
Great article! I had always wondered what "powder metallurgy" alluded to. Very informative and educational. Thank you!
So many things that I take for granted. It’s a good thing I’m writing it down.
http://www.KnifeSteelNerds.com - Steel Metallurgy topics related to knives

Daveho
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Re: What is Powder Metallurgy?

Postby Daveho » Mon Aug 20, 2018 8:48 pm

A synonym for witchcraft

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Re: What is Powder Metallurgy?

Postby u.w. » Tue Aug 21, 2018 7:11 am

Thanks for another Great article. Read it yesterday. Very cool.

u.w.

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Re: What is Powder Metallurgy?

Postby Ed Schempp » Tue Aug 21, 2018 9:05 am

Good job Larrin, I appreciate your efforts, thanks.

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Larrin
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Re: What is Powder Metallurgy?

Postby Larrin » Tue Aug 21, 2018 9:45 am

Ed Schempp wrote:
Tue Aug 21, 2018 9:05 am
Good job Larrin, I appreciate your efforts, thanks.
Thanks Ed!
http://www.KnifeSteelNerds.com - Steel Metallurgy topics related to knives

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Featherblade
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Re: What is Powder Metallurgy?

Postby Featherblade » Tue Aug 21, 2018 4:49 pm

Easy to understand and very useful article. Thanks!

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Bloke
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Re: What is Powder Metallurgy?

Postby Bloke » Tue Aug 21, 2018 5:16 pm

As always Larrin an interesting and informative read. :cool:

Thanks again! :)
A day without laughter is a day wasted. ~ Charlie Chaplin


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