On July 13, 2023, Prof. Gang Wang si otu na Institute of Materials Research nke Shanghai University bipụtara ha ọhụrụ nnyocha pụta "Microstructural evolushọn na n'ibu Njirimara nke (FeCoNi) 85.84Al7.07Ti7.09 elu-entropy alloy site nhọrọ laser agbaze na ịka nká ọgwụgwọ", nke utilizes nke ukwuu n'ichepụta usoro na-arụ ọrụ nke ọma na-arụ ọrụ nke ọma na-arụ ọrụ nke ọma usoro. ((FeCoNi) 85.84Al7.07Ti7.09) elu-entropy alloy. 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'ụzọ nwere ike nweta na FCNAT 780, N'ihi na ezigbo n'ibu Njirimara (mkpụrụ ike σ0.2, kacha tensile ike σUTS, na elongation na nkwụsịtụ εf ụkpụrụ nke 1214 MPa, 1625 MPa, 1625 MPa, na nkwanye ùgwù).
(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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Onye edemede: Yolanda/Lili Lu/Seazon
