Effect of Input Structure of Blank on Development of Final Structure when Processing at Temperatures between Solidus and Liquidus (bibtex)
by B. Mašek, F. Vančura, D. Aišman, H. Jirková, M.F.-X. Wagner
Abstract:
The article describes the effect of input material structure on the structure development during the subsequent processing by mini-thixoforming technology. Two different initial states were prepared from X210Cr12 tool steel for the experiment. The first semi-product was used in the soft-annealed state with ferritic-carbidic microstructure and coarse primary chromium carbides. Ferritic grain size 13,7 μm and the hardness was 210 HV30. The second state was prepared by high temperature annealing at 1200 °C for 1 hour. The microstructure then consisted of austenite and carbides. The grain size was in the range of ca. 37 to 50 μm, hardness was 300 HV30. Treatment consisted of heating to a semi-solid state at the temperature 1265 °C in 9 s. That was followed by direct cooling to room temperature in 2 s. The grain size and distribution of eutectic in the volume of the processed material were selected as the attributes for microstructure evaluation after mini-thixoforming. The structure after processing in a semi-solid state consists of polyhedral austenite with a grain size of 43-59 μm, compared to the initial range 37-50 μm. This compares to the soft annealed state when, after semi-solid processing, the grain size was only 10 to 13 microns.
Reference:
Mašek, B., Vančura, F., Aišman, D., Jirková, H., Wagner, M.F.-X.: Effect of Input Structure of Blank on Development of Final Structure when Processing at Temperatures between Solidus and Liquidus, Procedia Engineering 100, 722-729, 2015.
Bibtex Entry:
@Article{Masek2015a, Title = {{Effect of Input Structure of Blank on Development of Final Structure when Processing at Temperatures between Solidus and Liquidus}}, Author = {Ma\v{s}ek, B. and Van\v{c}ura, F. and Ai\v{s}man, D. and Jirkov\'{a}, H. and Wagner, M.F.-X.}, Journal = {Procedia Engineering}, Year = {2015}, Pages = {722--729}, Volume = {100}, Abstract = {The article describes the effect of input material structure on the structure development during the subsequent processing by mini-thixoforming technology. Two different initial states were prepared from {X210Cr12} tool steel for the experiment. The first semi-product was used in the soft-annealed state with ferritic-carbidic microstructure and coarse primary chromium carbides. Ferritic grain size 13,7 μm and the hardness was 210 HV30. The second state was prepared by high temperature annealing at 1200 °C for 1 hour. The microstructure then consisted of austenite and carbides. The grain size was in the range of ca. 37 to 50 μm, hardness was 300 HV30. Treatment consisted of heating to a semi-solid state at the temperature 1265 °C in 9 s. That was followed by direct cooling to room temperature in 2 s. The grain size and distribution of eutectic in the volume of the processed material were selected as the attributes for microstructure evaluation after mini-thixoforming. The structure after processing in a semi-solid state consists of polyhedral austenite with a grain size of 43-59 μm, compared to the initial range 37-50 μm. This compares to the soft annealed state when, after semi-solid processing, the grain size was only 10 to 13 microns.}, Doi = {10.1016/j.proeng.2015.01.425}, Publisher = {Elsevier {BV}} }
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