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冷却速率对TC16钛合金显微组织和力学性能的影响
Alternative TitleEffect of cooling rate on microstructure and mechanical properties of TC16 titanium alloy
张志强; 董利民; 胡明; 雷晓飞; 杨洋; 杨锐
2019-07-15
Source Publication中国有色金属学报
ISSN1004-0609
Volume29Issue:07Pages:1391-1398
Abstract利用XRD、SEM、TEM和力学试验机等手段分析不同冷却速率的TC16钛合金试样的相组成、显微组织和力学性能,并分析冷却速率对TC16钛合金显微组织和力学性能的影响。结果表明:TC16钛合金经800℃保温处理后,水淬和空冷试样均由α相、α″马氏体、ω相和β相组成,炉冷试样仅由α相和?相组成;水淬和空冷试样中的初生α相体积分数和晶粒尺寸都相近,均比炉冷试样的小。水淬和空冷试样的单向拉伸曲线上,出现双屈服现象;随着冷却速率的降低,TC16钛合金的屈服强度提高;水淬和空冷试样的抗拉强度相近,高于炉冷试样的;3种冷却速度试样的伸长率和断面收缩率相近,都具有优异的室温塑性。
Other AbstractThe microstructure evolutions of the TC16 titanium alloy corresponding to different cooling rates at 800 ℃ were investigated by techniques of XRD,SEM and TEM.The tensile properties of each sample were finally evaluated.The results show that TC16 titanium alloy consists of primary phase,α″ martensite,thermal phase and metastable phase in both water quenching and air cooling samples,but only primary α phase and metastable phase are identified in furnace cooled sample.The volume fraction and grain size of primary α phase in both water quenching and air cooling samples are nearly the same,which are smaller than that of furnace cooling one.The dual yielding phenomenon was observed on the engineering stress-strain curves of both water quenching and air cooling samples.With decreasing the cooling rate,the yield strength of TC16 titanium alloy increases.The ultimate tensile strength of water quenching and air cooling samples exhibits the same value which is larger than that of furnace cooling one.Although the slight difference on the tensile strength for three kinds of samples,the elongation and area reduction representing the ductility are nearly the same.
KeywordTC16钛合金 冷却速率 显微组织 力学性能 循环拉伸
MOST Discipline CatalogueTG146.23 ; TG156.91
Indexed ByCSCD
Language中文
WOS SubjectTG146.23 ; TG156.91
CSCD IDCSCD:6568228
Citation statistics
Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/80299
Collection中国科学院金属研究所
Affiliation1.中国科学院金属研究所
2.东北大学材料科学与工程学院
3.中国科学院福建物质结构研究所
Recommended Citation
GB/T 7714
张志强,董利民,胡明,等. 冷却速率对TC16钛合金显微组织和力学性能的影响[J]. 中国有色金属学报,2019,29(07):1391-1398.
APA 张志强,董利民,胡明,雷晓飞,杨洋,&杨锐.(2019).冷却速率对TC16钛合金显微组织和力学性能的影响.中国有色金属学报,29(07),1391-1398.
MLA 张志强,et al."冷却速率对TC16钛合金显微组织和力学性能的影响".中国有色金属学报 29.07(2019):1391-1398.
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