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Dissolution of iron-chromium carbides during white layer formation induced by hard turning of AISI 52100 steel

Seyed Hosseini B. (Institutionen för material- och tillverkningsteknik, Yt- och mikrostrukturteknik) ; Richard Dahlgren (Institutionen för material- och tillverkningsteknik) ; K. Ryttberg ; Uta Klement (Institutionen för material- och tillverkningsteknik, Yt- och mikrostrukturteknik)
Procedia CIRP. 6th CIRP International Conference on High Performance Cutting, HPC2014 (2212-8271). Vol. 14 (2014), p. 107-112.
[Konferensbidrag, refereegranskat]

The (Fe, Cr)3C carbide morphology in the surface region of hard turned bainitic AISI 52100 steel was investigated using both experimental techniques and simulations, where microstructural analysis was correlated with analytical studies of the carbide dissolution kinetics using DICTRA1. The experimental results showed that for both predominantly thermally and mechanically induced white layers no significant carbide dissolution took place down to a depth of 20 μm below the machined surfaces. This was confirmed by the analytical results from DICTRA, which showed that no significant carbide dissolution should take place during hard turning given the short contact times. Within the hard turned surfaces up to ∼12% of the carbides were elongated, indicating plastic deformation of the carbides during machining.

Nyckelord: AISI 52100 steel , Carbide dissolution , DICTRA simulation , Hard turning , Surface integrity , White layer



Denna post skapades 2014-07-02. Senast ändrad 2015-01-05.
CPL Pubid: 200042

 

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