Effect of grain size on high-cycle fatigue properties in alpha-type titanium alloy at cryogenic temperatures

Ono, Yumie; Yuri, Tetsumi; Sumiyoshi, Hideshi; Matsuoka, Saburo; Ogata, Tetsuya

doi:10.1016/s0011-2275(03)00125-5

Cited by 21 publications

(12 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The crystal structures of -and -type titanium materials are hcp (hexagonal close-packed) and bcc (bodycentered cubic), respectively. Other research groups have been also obtained fatigue curves with clear and unclear fatigue limits for -type Ti-29Nb-13Ta-4.6Zr alloy 11) and -type Ti-5Al-2.5Sn alloy, 12) respectively. The þ type titanium alloys such as Ti-6Al-4V and Ti-4.5Al-3V-2Fe-2Mo showed clear fatigue limits.…”

Section: Fatigue Limitmentioning

confidence: 99%

Fatigue Behaviors of Ultra Fine Wires of β-Type and α-Type Titanium Alloys

et al. 2009

View full text Add to dashboard Cite

Fatigue behaviors of ultra fine wires of -type Ti-14Mo-3Nb-1.5Zr alloy and -type Ti-10Zr alloy and -type CP (commercially pure) titanium with diameters in the range of 35-100 mm were investigated by rotating-bending fatigue testing in 1 mass% lactic acid solution maintained at 310 K. The maximum number of cycles during fatigue testing was 10 7 . The -type Ti-14Mo-3Nb-1.5Zr alloy wires showed a clear fatigue limit. On the other hand, the -type Ti-10Zr alloy wire and -type CP titanium wire did not show a clear fatigue limit, and their fatigue strengths gradually decreased with decreasing maximum bending stress. The fatigue limit of a -type Ti-14Mo-3Nb-1.5Zr alloy wire with a polished surface was greater than 50% of its tensile strength, while the fatigue limits of titanium wires with as-drawn surfaces were less than 50% of their tensile strengths. Surface defects that were introduced during the cold drawing process of the wires might act as crack origins of the fatigue fracture. Therefore, surface polishing is an effective technique for improving fatigue properties of titanium wires. The elution of metallic ions from the wires into the 1 mass% lactic acid solution was suppressed at a very low level during fatigue testing of all the investigated titanium wires.

show abstract

Section: Fatigue Limitmentioning

confidence: 99%

Fatigue Behaviors of Ultra Fine Wires of β-Type and α-Type Titanium Alloys

et al. 2009

View full text Add to dashboard Cite

show abstract

“…At 293 K, there is no facet that can be clearly identified as crack initiation sites. A difference of this material from the reference material is the grain size of a phase [5]. The grain size of the reference material is 30 |im.…”

Section: Fatigue Propertiesmentioning

confidence: 99%

“…The mechanism of fatigue cracking is still under analysis [5,6], however, we studied the properties of the current materials and found the difference of fatigue properties caused by the microstructure of those materials. …”

Section: Almentioning

confidence: 99%

Data Sheet Program and Mechanical Properties of Ti-5Al-2.5Sn ELI and Alloy 718 at Cryogenic Temperatures

Ogata¹,

Yuri²,

Sumiyoshi³

et al. 2004

AIP Conference Proceedings

Self Cite

View full text Add to dashboard Cite

In the development of Japan's self-developed H-IIA launch vehicle, it is important to sufficiently comprehend the properties of materials under conditions in which the materials are used in the system for its design and the improvement of its reliability. Through the process of failure analysis of the LE-7 engine of H-II No. 8 in 1999, detailed materials data and photographs of the fracture surface were required as reference data to determine in terms of fracture morphology and to analyze the fracture stress [1]. A series of mechanical properties tests, such as tensile tests, impact tests, fracture toughness tests, and fatigue tests, on Ti-5Al-2.5Sn ELI and Alloy 718 at room temperature to 4K were mainly conducted by NIMS and NASDA. The obtained tensile and fracture toughness properties were a little bit smaller than those reported by NASA and NRJM, however, the fatigue properties were relatively lower than the data reported so far. Data resulting from the tests were reviewed in detail and published in the form of data sheets. This paper will introduce the data sheet program on space use materials and discuss an effect of micro structure of Ti-5Al-2.5Sn ELI and Alloy 718 on their mechanical properties at cryogenic temperatures.

show abstract

“…Changes in the microstructure can alter the fatigue behavior of metal material. A considerable amount of work has been concerned with the effect of grain size on the fatigue crack initiation and on the fatigue life of titanium alloys (Ref [1][2][3][4][5]. However, only a few works have focused on the influence of grain size on fatigue crack propagation behavior.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Grain Size on Fatigue Crack Propagation in Commercial Pure Titanium Investigated by Acoustic Emission

Zhang

Shen

2015

J. of Materi Eng and Perform

View full text Add to dashboard Cite

The effect of grain size on fatigue crack propagation and the corresponding acoustic emission (AE) characteristics of commercial pure titanium (CP-Ti) were investigated at room temperature. After a fourpoint bending fatigue testing, the fatigue features and AE source mechanisms were discussed, combined with microstructural and fractographic observations. The results showed that the increased grain size had little effect on the stable propagation rate of fatigue crack; however, a significant increase in the AE counts rate was observed. During crack stable propagation, the relationship between the AE counts rate and the fatigue stress intensity factor range was generally in accordance with the Pairs law, with the exception of some local fluctuations due to regional twin paling. While lenticular twins appeared dispersively along the crack, twin palings were observed occasionally at the edge of the crack. Twin paling occurrence was more frequent in the specimens with larger grains than in those with smaller grains. This suggests that twin discontinuously played a role in the fatigue process in this CP-Ti, and that the AE technique is sensitive to crack propagation and twinning events during fatigue.

show abstract

Effect of grain size on high-cycle fatigue properties in alpha-type titanium alloy at cryogenic temperatures

Cited by 21 publications

References 13 publications

Fatigue Behaviors of Ultra Fine Wires of β-Type and α-Type Titanium Alloys

Fatigue Behaviors of Ultra Fine Wires of β-Type and α-Type Titanium Alloys

Data Sheet Program and Mechanical Properties of Ti-5Al-2.5Sn ELI and Alloy 718 at Cryogenic Temperatures

The Effect of Grain Size on Fatigue Crack Propagation in Commercial Pure Titanium Investigated by Acoustic Emission

Contact Info

Product

Resources

About

Effect of grain size on high-cycle fatigue properties in alpha-type titanium alloy at cryogenic temperatures

Cited by 21 publications

References 13 publications

Fatigue Behaviors of Ultra Fine Wires of &beta;-Type and &alpha;-Type Titanium Alloys

Fatigue Behaviors of Ultra Fine Wires of &beta;-Type and &alpha;-Type Titanium Alloys

Data Sheet Program and Mechanical Properties of Ti-5Al-2.5Sn ELI and Alloy 718 at Cryogenic Temperatures

The Effect of Grain Size on Fatigue Crack Propagation in Commercial Pure Titanium Investigated by Acoustic Emission

Contact Info

Product

Resources

About

Fatigue Behaviors of Ultra Fine Wires of β-Type and α-Type Titanium Alloys

Fatigue Behaviors of Ultra Fine Wires of β-Type and α-Type Titanium Alloys