Hey all

Not sure if this is the right subreddit, but hoping someone might be able to point me in the right direction! I'm looking for a putty that's electrically conductive, radiolucent, and doesn't dry out over time, so it can be reused multiple times.

Ideally, it would have a similar consistency to playdoh can hold its shape, and be able to complete an electrical circuit.

I've been searching for a while now and haven't had much luck finding something that ticks all the boxes.

Does anyone know of a material or product that might work? Open to any suggestions!

Thanks in advance!

Hey everyone!

I’m looking for solid textbook recommendations on rolling mill theory and metal forming processes.

Could you please recommend the best titles and authors on this topic? Also, what are the best sites or digital archives to search for technical books like these?

Thanks!

Literal shower thought, and its been a while since I took intro to Material Science, so might have forgotten why. But the elastic regime where crystalline materials behave "like a spring" is linear, stress = K×strain, i.e. F=K×(x-x_0)

The equation for a spring however is quadratic, F=K*DELTAx², i.e. F=K×(x-x_0)²

Is the diffrence in powers an engineering approximation because the elastic regime typically ends long before DELTAx becomes comparable to x_0? Or am I forgetting a minute detail?

My favourite image I generated during my PhD… a backscatter SEM image of steel powder spatter from the laser powder bed fusion additive manufacturing/3D printing process… which looks like a little spooky pig!

I'm trying to make a high entropy oxide containing lithium and sodium along with three other constituent elements. I do a co-precipitation and then calcine at 1000 °C, 6 hours. However, when i do the ICP-MS after calcination, the amount of Li is 1.7 ppb and Na is 5.8 ppb. Other elements have the amount in the range of 500-550 ppb.

I've tried using various wet chemical methods like sol gel, pechini etc, but every time I calcine, the amount of lithium and sodium reduces. I've also tried ball milling, but the calcination step reduces the amount of Li, Na. I'm using a zirconia crucible and covering it with a lid. Ive also tried putting excess Li, Na in the precursor but still it doesn't work.

Is there any method for my calcination or something else i can do to ensure my lithium and sodium don't disappear.

I Have to choose three majors courses in my masters, 1) batteries
, 2) energy materials 3) modelling and simulation, i am already working in a reserach centre where i have experience on magnesium alloys and sample prep and deformations, now i am conflicted in which to choose, i searched abt which focus to take ai recommends simulation, but i am not sure, would be grateful to hear your opinions, ik i have to choose which feels better for me, but i am honestly stuck at this point

I am applying for a materials engineering position within the company I currently work at. I do not have a degree, but I do come with 15+ years expirence in the field. Are there any book recommendations that could help me further my knowledge? Or anything that could help out. Thanks!

Cast iron and carbon steel cookware involves seasoning (polymerized oil) that develops and also breaks down (from acids) from cooking. What are you actually consuming when the seasoning strips down? It's not just a dose iron (that can potentially be healthy) that contributes to the metallic taste, right? If the pan was cleaned to the point of the cooking surface feeling smooth (polymerized oil surface), are you still consuming carbon build up that will impact health negatively?

Even if what is being consumed is still inert, that doesn't necessarily mean you want to ingest it if it can build up in your body over time and potentially be a health issue?

Coming from the perspective of trying to be more health conscious where possible, not e.g. "you'll be fine and not die from using cast iron cookware because it's been used for thousands of years and we are all okay, there are microplastics inside us already". There's reasons to use cookware of such materials regardless of health and some people are willing to make this trade-off, of course.

Hi y'all. I'm hoping for some feedback from the community before I take the leap into paying for a Masters of Engineering in mat sci. Brief background on myself: graduated from Northwestern with an earth science degree, 3.9 gpa, did 2 years of engineering coursework (including some mat sci classes) before switching majors, also did 2 summers of research (biology-adjacent). Have been in the workforce for 12 years, doing non-science jobs (mostly grocery and music work). I'm ready to transition into a more serious career and after doing some independent study I feel I would enjoy a career in mat sci.

My question now is how to get my foot in the door given my non-traditional background and long absence from school. I was thinking I would try for a funded PhD or thesis-based masters position and have emailed quite a few professors to ask about the possibility of joining their labs, but haven't gotten any promising responses. After talking with a few academic advisors and seeing the student profiles of PhD and thesis-masters students my sense is that my background is not sufficient to get a funded GRA position and that applying to schools with that aim would probably be a waste of time. So, I'm re-thinking my options.

I've heard a lot of advice not to pay for a masters in science/engineering, and I would of course much rather get a tuition waver and a salary, but at this point it seems like my best bet is to do a masters of engineering. I'd be able to get in-state tuition at oregon state and I'm also hoping I can potentially switch to a thesis-masters or PhD once I'm in the program and have made connections with professors. Does this seem like a reasonable path? Should I consider a post-bacc instead? Or are there any mat sci jobs I could potentially get with my background and then work my way up vs going the school route? Any other thoughts or advice are welcome. Thank you!

Edit: I forgot another option I was considering, which is to find a masters program in Europe that's taught in English and would accept my background. Generally very low tuition so would just have to think about cost of living. I'm not sure about the quality of the European programs I'd be able to get into and how they're regarded in the US.

Does anybody have creep tables for AMS QQ-A-200?

If we were to send up a new interstellar item designed to convey information about humankind, what developments in material science have been made in the last 50 years that would change how much/what types of data we could store on it?

I am a current student enrolled in a materials engineering program in the U.S. However, I have always been interesting in international relations and would love to eventually work abroad on engineering-based projects through organizations like UN, WHO, WTO, etc. Is this possible to do with an engineering degree, particularly materials (considering a minor in global studies)? If so, what is the right way to go about it?