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1Cr18Ni9Ti钢因为应用广泛,除应重视其高低温机械性能以及抗腐蚀能力外,它的某些性能设计或制造使用部门亦必须加以注意,下面仅就生产中遇到的几个问题作一介绍,以供参考。一、化学成份对热加工性能的影响众所周知,1Cr18Ni9Ti钢属于奥氏体钢,然而由于成份的波动(在合格范围内)和热加工规范的影响,它的组织内一般都含有一定数量的铁素体,具体含有多少铁素体量,决定于铬当量(Cr′)和镍当量(Ni′)以及热加工规范,可通过当量算式及相图(图
1Cr18Ni9Ti steel because of its wide range of applications, in addition to should pay attention to its high and low temperature mechanical properties and corrosion resistance, some of its performance design or manufacture of the use of the Department also must be noted that the following are just a few problems encountered in the production of an introduction, for reference. First, the chemical composition of the hot processing performance As we all know, 1Cr18Ni9Ti steel is austenitic steel, but because of the composition of the fluctuations (in the pass range) and the impact of thermal processing norms, the organization usually contain a certain amount of ferrite Depending on how much ferrite is contained, depending on the chromium equivalent (Cr ’) and the nickel equivalent (Ni’), as well as the thermal processing specifications, the equivalence formula and phase diagram