预制坯对航空类铝合金H型锻件截面组织流线的影响  

The effect of preformed blank on the organization flowline of aeronautic H-section aluminum alloy forging

作　　者：吴道祥[1] 周杰[1] 张建生[1] 高林 

机构地区：[1]重庆大学材料科学与工程学院,重庆400044 [2]中国第二重型机械集团公司,四川德阳618000

出　　处：《模具工业》2015年第2期19-24,共6页Die & Mould Industry

基　　金：中国科技部重大专项项目(2012ZX04010-081)

摘　　要：针对航空类铝合金H型锻件成形过程出现的穿流、变形不均匀等缺陷,以Deform软件为平台,研究不同筋部高宽比预制坯对铝合金H型锻件成形过程中金属流线及晶粒尺寸的影响。研究结果表明,预制坯高宽比越小,锻件出现穿流缺陷越严重;预制坯高宽比越大,锻件出现穿流的几率越小,但锻件截面晶粒尺寸分布越不均匀。In order to eliminate the defects of flow and uneven deformation in forming an aeronautic H-section aluminum alloy forging, the effect of preformed blank with different rib depth-width ratio on the metal flowline and grain size in the product forming process was researched based on the Deform software platform. The research results show that,the smaller the depth-width ratio of preformed blank is, the more serious the flow is in the forging; the greater the depth-width ratio is, the smaller the probability of the flow is,but the more nonuniform the grain size distribution of the forging section is.

关 键 词：预制坯 高宽比 铝合金H型锻件 穿流 晶粒细化 

分 类 号：TG316[金属学及工艺—金属压力加工]