Questions tagged [alloys]

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Electric Current Based Shape-Memory Alloy

Would it be possible to create a piece of metal, made out of an alloy or combination of alloys, that undergoes a shape-memory-esque change in structure in reaction to an electric current? Could it ...
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2answers
1k views

What's the difference between tempering and aging?

The processes sound really similar; I'm asking with respect to Martensite processing. Essentially the difference between Tempered martensite and Aged martensite for Steels
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4answers
4k views

Benefits and disadvantages of aluminium alloys as a replacement for structural steels in ships

My Answer. Benefits: The major advantage of aluminum in ship building is its strength to density ratio. Aluminum has high tensile strength with less weight, which results in lowering the weight of ...
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2answers
93 views

38CrNiMoAlA: Does it even exist?

I have some plungers made of 38CrNiMoAlA. Their required hardness to be achieved via quenching/tempering is 51 HRC. I've scoured our technical order for heat treatment of steel alloys but the material ...
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1answer
114 views

Maximum Carbon content on the surface of Mild Steel that is Pack Carburized

Starting from a piece of Mild Steel that is then Pack Carburized, what's the maximum Carbon content that the surface can soak in? Given that we keep it around less than 1000°C and enough time, is it ...
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3answers
557 views

Steel : is Damascus steel still relevant compared to modern alloys?

Damascus steel is a multilayered hand-forged steel used in the past for arabic and japanese weapons and now for kitchen knives and various connoisseur blades. Usually, two alloys are used ...
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35 views

How to estimate the physical parameters of 40% Cu + 60% Mo alloy?

I need to know, or estimate the physical characteristics of the alloy which consists 40% copper and 60% molybdenum. I know only: Density: $9.62 \frac{g}{cm^3}$ Thermal conductivity: $223 \frac{W}{m·K}...
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2answers
96 views

Aluminum for an Ejection Seat Replica

I love ejection seats and the flying contraptions they usually reside in. In fact, I like them so much that I want to make my own, despite my profound lack of training and inexperience with ...
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2answers
219 views

Furnace for aluminum alloy creation

What kind of furnace is used to create alloys for aluminum die casting? I have only been able to find information about how to create alloys or how to process them afterwards in the die casting ...
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1answer
2k views

Alloys with same density as gold

Lavoisier's principle of mass conservation states that the mass of a system must remain constant over time. But, as far as I know, there's no similar principle for density. So, is it possible to ...
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1k views

ANSYS APDL Shape memory effect option of SMA not working

I am trying to define the material properties of a shape memory alloy material in ANSYS APDL V15. There are material properties for Superelastic materials (SUPE option) and material properties for ...
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4answers
2k views

How can the alloying materials of recycled steels be separated?

As I know, a very considerable part of the currently processed steels (around half of it) is coming from recycling. But during the steels coming into the recycling process are coming normally from ...
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4answers
2k views

Do “non-iron steels” exist?

There are numerous steel alloys, containing mostly iron, carbon, and some other metals. Generally speaking, we can think of them as if they were some type of steel. My question is: do "non-ferrous ...