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一、前言无磁不锈钢要求在使用状态下具有极低的导磁率。18—8型不锈钢仅在固溶状态下可作为无磁不锈钢使用。但在冷变形状态使用时,已不能胜任。其原因是部分奥氏体转变为具有铁磁性的体心立方马氏体 a’~([1]),使钢的抗磁性能恶化。Cr16Ni14作为一种新型无磁不锈钢现已用于制作电视显象管中的无磁金属构件。其成分为,％:C Si Mn P≤0.07 ≤0.80 ≤2.00 ≤0.03S Cr Ni≤0.02 15～17 13～15该钢种的化学成份有利于固溶处理后获得无磁的单相奥氏体组织,且能降低钢的加工硬
I. Introduction Non-magnetic stainless steel requirements in the use of state has a very low permeability. 18-8 stainless steel can be used as non-magnetic stainless steel only in solution state. However, the use of cold deformation state, it can not be competent. The reason is that part of the austenite is transformed into a ferromagnetic body-centered cubic martensite a ’~ ([1]), so that the anti-magnetic properties of steel deteriorate. Cr16Ni14 as a new type of non-magnetic stainless steel is now used in the production of television kinescope non-magnetic metal components. Its composition is,%: C Si Mn P ≤ 0.07 ≤ 0.80 ≤2.00 ≤ 0.03S Cr Ni ≤ 0.02 15 ~ 17 13 ~ 15 The chemical composition of the steel is beneficial to the solution treatment to obtain the non-magnetic single-phase austenite Tissue, and can reduce the hard steel processing