Spyridon Chaskis

10 Questions 8 Answers 0 Followers

Questions related from Spyridon Chaskis

Are there any differences between lower Bainite carbides?

Is there any relationship (crystallographic) between the carbides (Fe3C) in the lower Bainite. I think that carbides inside and around lower Bainite plate do not behave the same way. Is there any...

14 April 2020 5,718 3 View

How to measure the Delta Ferrite content in martensitic PH stainless steel?

I want to measure the delta ferrite content in an 17-4 PH (uns s17400/aisi630) stainless steel. Is there any standard or certified procedure for an exact measure or even and approximation? The...

10 March 2020 2,149 7 View

Whats the best magnification to do an EDS Mapping in FESEM?

When I use high magnification (10000x) the map of some elements is not the very clear. Should I use lower magnification, like (5000x)?

05 March 2020 8,884 4 View

How to make Superpicral etchant?

I want to etch 17-4PH / 1.4542 / AISI 630 / X5CrNiCuNb16-4 stainless steel alloy after H1150D aging treatment in order to make visible the prior austenite grain boundaries.

04 March 2020 7,501 2 View

What is the meaning of "Ausforging in PH Stainless Steels"?

What is the exact meaning of "auforging techniques in PH stainless steels"? Also, according to literature it is stated that "using ausforging techniques to secure higher strengths and good...

04 February 2020 4,259 4 View

Where to find the ductile–brittle transition temperature (DBTT) for a specific alloy? Is there any way to calculate it?

I would like to know the the ductile–brittle transition temperature (DBTT) for 17-4 PH stainless steel. It is important for me to know this value after the aging of my samples. Is there any...

21 January 2020 5,416 3 View

What are the future trends for sintered stainless steels manufacturing?

Hello everyone, I would like to ask your opinion regarding the future trends for sintered stainless steel production. Why would we change typical stainless steel manufacturing to the sintered...

01 January 1970 1,233 3 View

Can aluminium industry transform into a "Green" industry?

We all know that aluminium production is not so "green", since the production cost (electricity, alumina, raw materials) is big, around 70% of the total cost. Moreover, the environmental footprint...

01 January 1970 4,144 4 View

Advices for a beginner in DFT Simulation

I am working on High-Entropy alloys and I would like to try and learn about DFT simulations. Since I am completely new in this field, where do you recommend me to start learning about DFT...

01 January 1970 3,287 9 View

Help with thermodynamic databases

Hello everyone, I am working on a project with a Precipitation Hardening Stainless Steel (17-4PH) and I am following the ASTM standard regarding H1150/H1150D aging heat treatments. In...

01 January 1970 8,188 0 View