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对锻造的4Cr14Ni14W2Mo钢经相应热处理后的奥氏体晶粒度、孪晶及碳化物类型做了研究,认为固溶处理后的臭氏体晶粒度主要取决于固溶加热温度,与正常锻造温度关系不大。固溶加热过程实质也是再结晶的继续,即二次再结晶,臭氏体晶粒的大小只能通过控制再结晶温度高低和时间长短来实现。该钢热处理后,碳化物类型为M_(23)C_6和M_7C_3两种,而以M_(23)C_6最多,其中M_(23)C_6为(Cr,Fe,W,Mo)_(23)C_6和(Fe,Ni)_(23)C_6两种结构,而M_7C_3为(Cr,Fe)_7C_3。
The forged 4Cr14Ni14W2Mo steel after the corresponding heat treatment of austenite grain size, twins and carbide type made a study that the solution treatment of the finer grain size mainly depends on the solution heat temperature, and normal forging Little relationship between temperature. The solution heating process is essentially the continuation of recrystallization, that is, the secondary recrystallization. The size of the deodorizing grain can only be achieved by controlling the recrystallization temperature and the length of time. After the steel was heat-treated, the carbide types were M_ (23) C_6 and M_7C_3, while M_ (23) C_6 was the most, with M_ (23) C_6 as (Cr, Fe, W, Mo) (Fe, Ni) _ (23) C_6, while M_7C_3 is (Cr, Fe) _7C_3.