[1]王华.模锻变形速率对TC18钛合金锻件组织及力学性能影响研究[J].中国材料进展,2018,(11):051-55.[doi:10.7502/j.issn.1674-3962.2018.11.11]
　WANG Hua.Influence of Hot Die Deformation Rates on Microstructure and Mechanical Properties of TC18 Titanium Alloy[J].MATERIALS CHINA,2018,(11):051-55.[doi:10.7502/j.issn.1674-3962.2018.11.11]
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模锻变形速率对TC18钛合金锻件组织及力学性能影响研究()
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中国材料进展[ISSN:1674-3962/CN:61-1473/TG]

卷:
期数:
2018年第11期
页码:
051-55
栏目:
研究报告
出版日期:
2018-11-30

文章信息/Info

Title:
Influence of Hot Die Deformation Rates on Microstructure and Mechanical Properties of TC18 Titanium Alloy
作者:
王华
（海军装备部，陕西 西安 710021）
Author(s):
WANG Hua
（ Navy Equipment Department， Xian 710021， China)
关键词:
TC18; 钛合金锻件; 模锻变形速率; 显微组织; 力学性能
Keywords:
TC18;  titanium alloy forge piece;  die deformation rate;  microstructure;  mechanical properties
DOI:
10.7502/j.issn.1674-3962.2018.11.11
文献标志码:
A
摘要:
研究了TC18钛合金不同模锻变形速率条件对显微组织及力学性能的影响规律。结果表明：较低模锻变形速率促进TC18钛合金β晶粒的动态再结晶过程，形成具有破碎的晶界α相的网篮组织，该组织断口具有韧性断裂组织特征，具有优异的塑性和断裂韧性；在较高变形速率条件下仅发生动态回复过程，形成具有平直的晶界α相的网篮组织，该组织塑性和断裂韧性均较低，断口呈冰糖状解理断裂组织特征；TC18钛合金强度性能对变形速率不敏感。
Abstract:
The influence of die deformation rates (range from 2 mm/s to 10 mm/s) on microstructure and mechanical properties of TC18 titanium alloy was investigated. The results showed that the low die deformation rate promoted the dynamic recrystallization of TC18 titanium alloy. The basketwave microstructure with broken grain boundary α phase was formed. The fractography characterization showed ductility dimple and the forged sample possessed excellent ductility and KIC fracture toughness. While only the dynamic recovery occurred during high die deformation rate, which produced the basketwave microstructure with straightness grain boundary α phase. The fractography characterization showed brittle cleavage and the forged sample possessed low ductility and KIC fracture toughness. The strength properties have insensitivity on the die deformation rates.
更新日期/Last Update: 2018-12-10