Na Julaị 13, 2023, ndị otu Prọfesọ Gang Wang na Institute of Materials Research nke Mahadum Shanghai bipụtara nsonaazụ nyocha ha kachasị ọhụrụ "Microstructural evolution and mechanical properties of (FeCoNi) 85.84Al7.07Ti7.09 elu-entropy alloy site na ịhọrọ laser agbaze na. ọgwụgwọ ịka nká", nke na-eji usoro nrụpụta ihe mgbakwunye na-arụ ọrụ nke ọma na usoro ịka nká dị mkpụmkpụ iji mepụta ((FeCoNi) 85.84Al7.07Ti7.09) alloy entropy dị elu.FeCoNi) 85.84Al7.07Ti7.09 elu-entropy alloy, nke na-egosipụta ihe ndị dị mma na-arụ ọrụ, na ike kachasị ike nke 1625 MPa, ike mkpụrụ nke 1214 MPa, na elongation na nkwụsị nke 11.6%.Prọfesọ Jia Yandong na Dr. Mu Yongkun bụ ndị na-emekọ ihe ọnụ.
Isi ihe nchoputa
Ọrụ a nyochara mmetụta ọgwụgwọ ịka nká nwere na evolushọn microstructural na akụrụngwa nke (FeCoNi) 85.84Al7.07Ti7.09HEA mepụtara site na.SLM.Edepụtara nkwubi okwu ndị a.
(1) A na-ewebata usoro ịgba ume abụọ, mgbakasị ike na ike mmiri ozuzo na FCNAT HEA site na iji.SLMusoro na ọgwụgwọ ịka nká nke dị mkpirikpi na 780 Celsius.N'ihi ya, a Nchikota nke elu-njupụta dislocations na precipitated n'usoro nwere ike nweta na FCNAT 780, na-eme ka ndị kasị mma n'ibu Njirimara (mkpụrụ ike σ0.2, kacha tensile ike σUTS, na elongation na nkwụsịtụ εf ụkpụrụ nke 1214 MPa, 1625 MPa). na 11.6%, n'otu n'otu).
(2) Usoro nhazi nkeSLMihe nlere anya na ihe nlere agadi bụ nke usoro FCC, L12 na L21 mejupụtara.Mgbe ọgwụgwọ ịka nká gasịrị, usoro L12 na L21 na-ebuli elu na ọdịnaya nke L12 na L21 na-eji nwayọọ nwayọọ belata site na mmụba nke ọgwụgwọ ọgwụgwọ ịka nká.
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