Mmepụta 1000MPaCP ọkọlọtọ oyi akpọrepu ígwè annealing okirikiri na-reheated ka annealing okpomọkụ nke oké egwu mpaghara, wee mma na nọgidere na-enwe banyere 400 isothermal deg.] C, n'elu martensite mmalite okpomọkụ (Ms).

1. Pasent olu nke ferrite na mpaghara ọdịnaya carbon nke dị oke mkpa na-ebelata okpomọkụ na njikwa oge.N'oge oyi na mkpuchi, akụkụ nke mpaghara dị oke egwu austenite n'ime bainite.

2. Austenite n'ime bainite olu, nke isothermal bainite mgbanwe okpomọkụ na iji chọpụta oge na ọdịnaya C na austenite na bainite mmalite okpomọkụ (nke Bs) maka TI ọrụ.Na-esote site na jụrụ oyi na ụlọ okpomọkụ na usoro ahụ, nhazi nke martensite, ma ụfọdụ nwere ike ịnọgide na-agbanwe mgbanwe austenitic.

3. Tupu itinye n'elu 0.3% Cr na 0.5% Cr steel na XPS.Anyị mụọkwara mmetụta nke abụọ na abụọ ụdị ọkụ annealing annealing okpomọkụ ebe igirigi.

4. 304 enweghị nkebi igwe anaghị agba nchara alloying ọcha Si, Mn na Cr na ala igirigi ebe segregation n'elu na-etolite oxide.Na ma annealing okpomọkụ, otu elu mejupụtara.Okpomọkụ dị iche bụ nnọọ obere, nke mere na segregation nke alloying ọcha na ego nke dịghị ịrịba mmetụta.

5. Cr ọdịnaya bụ 0.3%, Cr ego dị ntakịrị n'elu, ma ọ dịghị mmetụta na ihe ndị ọzọ.N'ihe ndabere ike Cr2p3, Cr n'ụdị Cr2O3 na-apụta n'elu.