t和應(yīng)力比R下Ti-5Al-5Mo-5V-1Cr-1Fe (Ti-55511)鍛件和棒材縱向的室溫高周疲勞性能及斷口形貌。結(jié)果表明：應(yīng)力比和應(yīng)力集中系數(shù)是影響疲勞性能的兩個(gè)重要因素。鍛件和棒材的疲勞強(qiáng)度均隨應(yīng)力比R的增大而增大,隨應(yīng)力集中系數(shù)Kt的增大而減小。鍛件的疲勞性能優(yōu)于棒材,并且鍛件的疲勞強(qiáng)度是棒材的1.08~1.57倍。"/>

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Ti–5Al–5Mo–5V–1Cr–1Fe合金高周疲勞性能及斷裂行為的研究
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作者單位:

1.西安建筑科技大學(xué)冶金工程學(xué)院;2.航空工業(yè)第一飛機(jī)設(shè)計(jì)研究院

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基金項(xiàng)目:

陜西省自然科學(xué)基金（2016KW-054）


Study on the High Cycle Fatigue Properties and Fracture Behavior of Ti–5Al–5Mo–5V–1Cr–1Fe Titanium Alloy
Author:
Affiliation:

1.School of Metallurgical Engineering,Xi’an University of Architecture Technology,Xi’an;2.AVIC the First Aircraft Institute,Xi’an

Fund Project:

Natural Science Foundation of Shaanxi Province (2016KW-054)

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    摘要:

    研究了在不同應(yīng)力集中系數(shù)Kt和應(yīng)力比R下Ti-5Al-5Mo-5V-1Cr-1Fe (Ti-55511)鍛件和棒材縱向的室溫高周疲勞性能及斷口形貌。結(jié)果表明：應(yīng)力比和應(yīng)力集中系數(shù)是影響疲勞性能的兩個(gè)重要因素。鍛件和棒材的疲勞強(qiáng)度均隨應(yīng)力比R的增大而增大,隨應(yīng)力集中系數(shù)Kt的增大而減小。鍛件的疲勞性能優(yōu)于棒材,并且鍛件的疲勞強(qiáng)度是棒材的1.08~1.57倍。

    Abstract:

    Under different stress concentration factors Kt and stress ratios R, the high cycle fatigue (HCF) properties and fracture morphologies of Ti–5Al–5Mo–5V–1Cr–1Fe (Ti-55511) forgings and bars in longitudinal orientation were studied at room temperature. The results show that stress ratio R and stress concentration factor Kt are two important factors that affect the fatigue properties. Both the fatigue strength of forgings and bars increases with increasing stress ratio and decreases with increasing stress concentration factor. The fatigue properties of forgings are better than bars, and the fatigue strength of forgings is 1.08~1.57 times greater than that of bars.

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劉瑩瑩,張樂,史曉楠,薛希豪,楊健. Ti–5Al–5Mo–5V–1Cr–1Fe合金高周疲勞性能及斷裂行為的研究[J].稀有金屬材料與工程,2018,47(12):3666~3671.[Yingying Liu, Le Zhang, Xiaonan Shi, Xihao Xue, Jian Yang. Study on the High Cycle Fatigue Properties and Fracture Behavior of Ti–5Al–5Mo–5V–1Cr–1Fe Titanium Alloy[J]. Rare Metal Materials and Engineering,2018,47(12):3666~3671.]
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  • 收稿日期:2017-06-20
  • 最后修改日期:2017-08-30
  • 錄用日期:2017-09-11
  • 在線發(fā)布日期: 2019-01-04
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