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23卷    第z1期    总第1期    2013年12月

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文章编号:1004-0609(2013)S1-0485-05
热处理对Ti3Al基合金板材微观组织和力学性能的影响
郭佳林1,魏寿庸1,杨 奇1,王 新1,曹京霞2

(1. 宝鸡钛业股份有限公司,宝鸡 721014;
2. 北京航空材料研究院,北京 100095
)

摘 要: 研究热处理工艺对Ti3Al基合金热轧板材(1.9 mm×900 mm×3 000 mm)组织和性能的影响。结果表明:当板材在900~1 050 ℃退火时,退火温度对微观组织和室温塑性(δ5)影响较为明显,对室温强度的影响则较小;时效时间对板材的室温和高温性能影响不明显,同时固溶时效后的板材具有较好的超塑性,在条件为温度1 020 ℃、变形速率2×10-4 s-1时,其伸长率达到617%。

 

关键词: Ti3Al基合金板材;微观组织;力学性能;超塑性

Effect of heat treatment on microstructures and mechanical properties of Ti3Al based alloy sheet
GUO Jia-lin1, WEI Shou-yong1, YANG Qi1, WANG Xin1, CAO Jing-xia2

1. Baoji Titanium Industry Co., Ltd., Baoji 721014, China;
2. Beijing Institute of Aeronautical Materials, Beijing 100095, China

Abstract:The effect of heat treatment on microstructures and mechanical properties of Ti3Al based hot-rolling alloy sheet (1.9 mm×900 mm×3 000 mm) was studied. The results show that microstructures and plasticity at the room temperature will change obviously while annealing temperature is between 900 and 1 050 ℃. No significant differences of the room and elevated temperature properties are observed after long time aging treatment, but the treated sheet has excellent superplasticity. The elongation rate reaches 617% under the condition of 1 200 ℃ temperature and 2×10-4 s-1 deformation rate.

 

Key words: Ti3Al based alloy sheet; microstructures; mechanical properties; superplasticity

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

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

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