Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第20卷    第z1期    总第1期    2010年10月

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文章编号:1004-0609(2010)S1-s0079-04
锻造温度对TC4-DT钛合金棒材力学性能及
显微组织的影响
史小云,付宝全,王文盛,唐晓东,陈小苗

(西部超导材料科技有限公司,西安 710018)

摘 要: 研究不同的锻造温度对TC4-DT棒材力学性能及显微组织的影响。结果表明:随着锻造温度的升高,试样的室温强度和塑性明显提高,但当温度升高到相变点以上时,强度开始降低。从显微组织来看,在相变点以下时,温度的升高导致初生α相含量明显降低,条状次生α相明显增多;当温度升高到相变点以上时,得到片状组织,温度越高,片状组织越粗大。因此,细小的次生α相对于强度的贡献要大于初生α相,原因是采用了同样的热处理制度,固溶强化的效果基本相同,强化作用主要由界面产生。

 

关键字: TC4-DT钛合金;力学性能;显微组织

Effect of forging temperature on mechanical property and microstructure of TC4-DT titanium
SHI Xiao-yun, FU Bao-quan, WANG Wen-sheng, TANG Xiao-dong, CHEN Xiao-miao

Western Superconducting Technologies Co., Ltd., Xi’an 710018, China

Abstract:The effects of forging temperature on mechanical property and microstructure of TC4-DT titanium were researched. The results show that the room temperature tensile intensity and plasticity of samples increase with increasing forging temperature below transformation temperature. And room temperature tensile intensity increases when the forging temperature increases above the transformation temperature. With increasing forging temperature under transformation temperature, the primary α phase is reduced, and secondary α phase obviously increases. While forging temperature is above transformation temperature, the film structure appears. And film structure grows large with increasing forging temperature. Therefore, secondary α phase is more favorable to intensity.

 

Key words: TC4-DT titanium; mechanical property; microstructure

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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