[1]李婷,杜宇,赵亮,等.热处理制度对大直径钛合金管材组织与性能的影响[J].中国材料进展,2017,(10):046-50.[doi:10.7502/j.issn.1674-3962.2017.10.10]
 LI Ting,DU Yu,ZHAO Liang,et al.Effect of Heat Treatment Processes on Microstructure and Property of Big-Diameter Titanium Alloy Tube[J].MATERIALS CHINA,2017,(10):046-50.[doi:10.7502/j.issn.1674-3962.2017.10.10]
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热处理制度对大直径钛合金管材组织与性能的影响()
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中国材料进展[ISSN:1674-3962/CN:61-1473/TG]

卷:
期数:
2017年第10期
页码:
046-50
栏目:
研究报告
出版日期:
2017-10-31

文章信息/Info

Title:
Effect of Heat Treatment Processes on Microstructure and Property of Big-Diameter Titanium Alloy Tube
作者:
李婷杜宇赵亮常江
西北有色金属研究院
Author(s):
LI TingDU YuZHAO LiangCHANG Jiang
Northwest Institute for Nonferrous Metal Research
关键词:
TC4ELI管材力学性能冲击韧性断裂韧性金相组织
Keywords:
TC4ELI tube mechanical property impact toughness fracture toughness metallograph
DOI:
10.7502/j.issn.1674-3962.2017.10.10
文献标志码:
A
摘要:
采用4种热处理制度对TC4ELI钛合金大直径管材试样进行处理,研究不同热处理制度对其组织与性能的影响。结果表明:经750 ℃×1 h/AC普通退火处理后,组织为魏氏组织,具有较高的冲击韧性和断裂韧性,强度较低;经900 ℃×1 h/AC处理后,组织为晶界模糊的魏氏组织,同样具有较高的冲击韧性和断裂韧性,且强度较普通退火有所上升;经930 ℃×1 h/WQ+580 ℃×6 h/AC处理后,组织为魏氏组织,α片层较为细小,其断裂韧性(968 MPa·m1/2)、强度(892 MPa)、断面收缩率(42%)以及伸长率(160%)达到4种处理制度下的最大值,但冲击韧性急剧下降;经930 ℃×1 h/WQ+650 ℃×6 h/AC处理后,组织为魏氏组织,晶内α相片层取向呈编织状,具有较高的强度和断裂韧性,冲击韧性较差。
Abstract:
Four kinds of heat treatment processes were used to study the effect on the microstructure and properties of the TC4ELI big-diameter titanium alloy tubes. The results show that after the processing of 750 ℃×1 h/AC,the widmanstatten structure is acquired,the impact toughness and fracture toughness are much higher,but the tensile strength is the lowest; after the processing of 900 ℃×1 h/AC,the widmanstatten structure with fuzzy grain boundary is obtained,the impact toughness and fracture toughness are as high as that of the previous processing,and the tensile strength is increased; after the processing of 930 ℃×1 h/WQ+580 ℃×6 h/AC,the widmanstatten structure with very fine α lamellas is obtained,the fracture toughness(968 MPa·m1/2),tensile strength(892 MPa),reduction in area(42%) and elongation(160%) are the highest among the properties after four kinds of heat treatment processes,while the impact toughness is decreased seriously; after the processing of 930 ℃×1 h/WQ+650 ℃×6 h/AC,the widmanstatten structure with α phase lamellas interwovened is acquired,the tensile strength and fracture toughness are also higher,but the impact toughness is the lowest value.
更新日期/Last Update: 2017-11-03