An analysis of segregation-induced changes in grain boundary cohesion in bcc iron
- 484 Downloads
We thoroughly compare available experimental as well as theoretical values of the strengthening/embrittling energy of numerous solutes at grain boundaries in α-iron and assess their reliability. The strengthening/embrittling energy is displayed according to its relationship to the difference of corresponding sublimation enthalpies of the host and the solute as well as with regard to the position of the solute in the Periodic Table.
The authors gratefully acknowledge financial support of the Czech Science Foundation [Projects P108/12/0144 (PL) and P108/12/0311 (MŠ)], by the Grant Agency of the Academy of Sciences of the Czech Republic [Project IAA100100920 (MŠ)], by the Academy of Sciences of the Czech Republic [Institutional Projects RVO:68378271 (PL) and RVO:68081723 (MŠ)], and by the Project CEITEC – Central European Institute of Technology (CZ.1.05/1.1.00/02.0068) from the European Regional Development Fund (MŠ).
- 1.Jones H (ed) (2001) Environmental effects on engineered materials. Marcel Dekker, New YorkGoogle Scholar
- 3.Lejček P (2010) Grain boundary segregation in metals. Springer, BerlinGoogle Scholar
- 8.Chen ZZ, Wang CY (2005) First-principles study of the effects of co-segregation of Ti, B and O on the cohesion of the α-Fe grain boundary. J Phys 17:6645–6652Google Scholar
- 9.Lejček P, Hofmann S, Krajnikov AV (1997) Chemical aspects of brittle fracture: grain boundary segregation. Mater Sci Eng A 234–236:283–294Google Scholar
- 11.Krasko GL (1997) Energetics of ideal grain boundary fracture in iron and the thermodynamic criterion of impurity embrittlement. In: Briant CL, Carter CB, Hall EL (eds) Interfacial engineering for optimized properties (Materials Research Society Symposium Proceedings 458:209–214)Google Scholar
- 17.Zhang GY, Liu GL, Zeng MG (2001) Recursive determination for effect of alloying element on impurity induced low angle grain boundary embrittlement. J Iron Steel Res 8:51–55Google Scholar
- 19.Yuasa M, Mabuchi M (2010) Effect of segregated Cu on an Fe grain boundary by first-principles tensile tests. J Phys 22:505705Google Scholar
- 20.Shang J, Zhao D, Wang C (2001) Effect of titanium on bcc Fe grain boundary cohesion. Acta Metall Sin 37:893–896Google Scholar
- 24.Shang JX, Wang CY (2001) Electronic effects of alloying elements Nb and V on body-centred-cubic Fe grain boundary cohesion. J Phys 13:9635–9644Google Scholar
- 29.Tian ZX, Yan JX, Hao W, Xiao W (2011) Effect of alloying additions on the hydrogen-induced grain boundary embrittlement in iron. J Phys 23:015501Google Scholar
- 30.Zhang L, Shu X, Jin S, Zhang Y, Lu GH (2010) First-principles study of He effects in a bcc Fe grain boundary: site preference, segregation and theoretical tensile strength. J Phys 22:375401Google Scholar