Krzysztof Wieczerzak

6 Questions 9 Answers 0 Followers

Questions related from Krzysztof Wieczerzak

How to calculate the lattice misfit between M23C6 carbides and ferrite or austenite?

I would like to determine the effect of the chemical composition of the alloy and annealing temperature on lattice misfit between M23C6 and matrix, i.e. ferrite or austenite. Exemplary lattice...

21 September 2018 9,595 3 View

Dear colleagues, do you know the example of fracture toughness, i.e. KIC, of sigma phase?

I am curious if someone has described the fracture toughness of sigma phase. I found few publications where hardness of sigma phase with different compositions was shown, however I cannot find...

25 April 2018 8,017 2 View

Can the "delta ferrite↔sigma phase + austenite" transformation, observed e.g. in duplex stainless steels, be called as eutectoid decomposition?

I found many publications, which suggest that the "delta ferrite↔sigma phase + austenite" transformation in duplex stainless steels is eutectoid. According to well known definition the eutectoid...

12 June 2017 5,735 3 View

What technique would you recommend to measure SFE in metalic materials, where significant chemical segregation is observed?

It is well known that, inter alia, work hardening rate of metalic materials is stacking fault energy (SFE) dependent. Consequently, the SFE has a significant impact on properties of metalic alloys...

09 April 2017 4,052 4 View

How to explain formation of needle-like precipitations, e.g. intermetalic compounds, in metalic materials?

The needle-like precipitations might be found in many metalic systems, e.g. σ or μ phase in nickel-based alloys, iron or silicon-rich phases in aluminum alloys, some carbides or intermetalic...

09 April 2017 9,530 2 View

What is the most accurate DFT treatment of pure metals and/or alloys (conductors) to predict their optical properties?

Dear colleagues, Dear colleagues, how to perform calculations of optical properties to find the best agreement with experimental data. I'm interested in metallic alloys (conductors), i.e. simple...

01 January 1970 413 3 View