冷轧变形率对GH536合金带材力学性能和织构的影响  

Effect of Cold Rolling Deformation on Mechanical Properties and Texture for GH536 Superalloy Strip

作　　者：贾崇林[1] 范强[1] 王颖[1] 张永跃[1] 史世风[1] 牛永吉[1] 李崇巍[1] 李窘[1] 

机构地区：[1]北京北冶功能材料有限公司,北京100192

出　　处：《金属材料研究》2012年第3期11-17,共7页Research on Metallic Materials

摘　　要：采用不同冷轧变形率轧制GH536合金薄带，研究了不同冷轧变形率对GH536合金带材力学性能、织构、显微组织的影响，以期确定轧制GH536薄带材的合理压下量。研究结果表明：在12．5％～60％冷轧变形率范围内，随冷轧变形率增大，GH536合金带材室温拉伸强度和硬度增高，塑性降低，屈强比增大，形变抗力增大。在不同冷轧变形率下，带材的织构组分均含有{110）〈112〉黄铜型；{112}〈111〉铜型；{213）〈364〉s型；{1i0）〈001〉高斯型，随变形率的增加，各组分都有所增强，黄铜型组分含量最多。在冷加工过程中，碳化物阻碍晶粒基体及晶界在变形中的滑动，起到阻碍晶粒基体变形的作用，GH536合金具有较强的抗变形能力。研究认为，在25％～37．5％冷轧变形率范围内，合金带材具有较好的成形性能和冷加工性能。With cold rolling deformation between 12.5% and 60% for GH 536 superalloy strips, effect of deformation on the mechanical properties, texture formation and microstruc- ture evolution has been investigated. The results show that an increase of deformation will lead to an increase of mechanical properties for tensile strength, hardness, yield ratio and de- formation resistance, an increase of rolling textures such as Goss { 110}〈001〉, S{213}〈 364〉, Copper{ll2}〈111〉 and especially Brass {110}〈112〉, and an increase of band structure as well as work hardening. An optifiaized process of cold rolling deformation be- tween 25 % and 37.5 % has been presented to obtain an excellent formability and cold work- ability for GH 536 superalloy strips.

关 键 词：冷轧变形率 GH536合金带 形变织构 显微组织 

分 类 号：TG146.15[一般工业技术—材料科学与工程]