Segregation of S and P along grain boundary in high speed steels and cleaning action of RE elements S,P在高速钢晶界上的偏聚与稀土元素的净化作用
Under the action of high temperature in fire, prestressed steel reinforced concrete members will form a section temperature field which is obviously gradient, the elastic modulus of the material will be re reduced, the component will have a greater thermal stress and deformation. 在火灾高温作用下,预应力型钢混凝土构件将形成一个截面存在明显梯度的温度场,材料的弹性模量降低,构件将产生较大的温度应力及变形。