Cryogenic Materials Data Handbook

Schwartzberg, F. R.; Osgood, Samuel H.; Keys, R. D.; Kiefer, Thomas

doi:10.21236/ad0420406

Cited by 36 publications

(22 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…3.5 and 2 1. Data for intermediate factors and for thinner sheet fall within these boundaries and also show little effects of rolling direction [37]. The reduction in strength ratio at 20K is about 25% for the sharpest notch.…”

Section: Mechanical Properties Of 6061-t6 Alloy At Low Temperaturesmentioning

confidence: 56%

See 1 more Smart Citation

Materials Selection for the HFIR Cold Neutron Source

Farrell¹

2001

View full text Add to dashboard Cite

Section: Mechanical Properties Of 6061-t6 Alloy At Low Temperaturesmentioning

confidence: 56%

“…8. Temperature Dependence of Charpy Impact [37] and Fracture Toughness [39] Properties for 606l-Td and -T6.51 Plate and Bar.…”

Section: Mechanical Properties Of 6061-t6 Alloy At Low Temperaturesmentioning

confidence: 99%

Materials Selection for the HFIR Cold Neutron Source

Farrell¹

2001

View full text Add to dashboard Cite

“…The tensile properties of annealed copper at 4.2 K are expressed in the following equation [4,12]. (2) From the estimation, the strains which were applied samples A and B were about 0.17% and 0.22%, respectively.…”

Section: Estimation Of Cyclic Strain By Lorentz Forcementioning

confidence: 99%

Critical Current and Fracture Behavior of Nb3Al Superconducting Strands under Cyclic Electromagnetic Force

Wadayama¹,

Natsume²,

Mito³

et al. 2011

JMSE-A

View full text Add to dashboard Cite

Abstract:To obtain basic information on fracture behavior and its critical current properties in superconducting strands with long-term periodic excitation, a unique experiment of cyclic strain loading was carried out. The strain was applied to a superconducting filament directly at 4.2 K using an electromagnetic (Lorenz) force instead of the usual mechanical load. The sample strands were Jelly-roll process Nb 3 Al with a copper ratio of 2.1. A new magnet system to evaluate long-term cyclic strain loading was set up. It was able to generate external fields up to 14 T with 58 mm bore. Cyclic strain was applied by the sample current control: 500 A, 0.1 Hz. In the experiment, critical current measurements and applied cyclic strain were carried out in alternation and the variation of critical current was obtained during the cyclic test. In this paper, the experimental results of cyclic strain loading on the critical current of Nb 3 Al strand and mirostructural observation of fracture surface of the filaments is described. Our results show that degradation of critical current properties was not observed at cycle number n = 1500 under the applied axial strain of 0.17%. A noxious sample, from which the outside copper stabilizer was deliberately removed, broke after n = 10, and crack propagation was observed at the fracture surface of the Nb 3 Al filaments. Under a microstructural observation of the break sample, the fracture points of the filaments were seen to be different in a longitudinal direction. A striped pattern like a beach mark due to crack propagation was also observed at the Nb 3 Al fracture surface. It was found that the cross-sectional homogeneity of the strand is important to avoid the damage and breaking from cyclic loading.

show abstract

“…The latter can most efficiently be realized by the use of low-density alloys such as aluminum and titanium. If only high specific strength and ductility were important, titanium alloys would probably be ideal materials for many applications in a wide temperature range [3,4]. Unfortunately, there are at least two negative features associated with titanium alloys, which motivate their replacement by new materials.…”

Section: Introductionmentioning

confidence: 99%

“…However, for an Al alloy to achieve specific strength equivalent to that for a Ti alloy at room (298K) and cryogenic (77K) temperatures, tensile strengths of 660 MPa and 850 MPa, respectively, are required. Unfortunately, none of the currently available commercial aluminum alloys can provide such high strength [4,7]. The highest strengths attained in aluminum alloy products at room and cryogenic temperatures are developed by Al-Zn-Mg-Cu alloys of 7XXX series.…”

Section: Introductionmentioning

confidence: 99%

Low Temperature Mechanical Properties of Scandium-Modified Al-Zn-Mg-Cu Alloys

Senkov

Miracle

Milman

et al. 2002

MSF

View full text Add to dashboard Cite

Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions; maintaining the data needed, and completing and reviewing this collection of information. Send comments regarding this burden estimate or any including suggestions for reducing this burden to Department of Defense, Washington Headquarters Services, Directorate for Information Opera: Highway, Suite 1204, Arlington, VA 22202-4302. Respondents should be aware that notwithstanding any other provision of law, no person shall collection of information if it does not display a currently valid OMB control number. PLEASE DO NOT RETURN YOUR FORM TO THE ABOVE! searching existing data sources, gathering and other aspect o' this collection of information, ions and Reports (0704-0188), 1215 Jefferson Davis be subject to any penalty for failing to comply with a ADDRESS. REPORT DATE (DD-MM-YYYY)2. REPORT TYPE SPONSOR/MONITOR'S ACRONYM(S) SPONSOR/MONITOR'S NUMBER(S)Approved for public release; distribution unlimited. Abstract. Tensile properties of three wrought alloys, (1) Al-10Zn-3Mg-l.2Cu-0.15Zr, (2) Al-10Zn-3Mg-l.2Cu-0.15Zr-0.39Mn-0.49Sc, and (3) Al-12Zn-3Mg-l.2Cu-0.15Zr-0.39Mn-0.49Sc were studied in T6 and T7 conditions at 298K and 77K. The properties depended on the alloy compositions and heat treatment conditions. An increase in the concentration of Zn increased strength and decreased ductility. An addition of Sc increased both strength and ductility. The alloys showed very high strength both at room and cryogenic temperatures. In the T6 condition, the following properties were obtained at room temperature: YS = 760 to 805 MPa, UTS = 770 to 810 MPa, El = 3 to 9%. When the temperature was decreased to 77K, strength increased while elongation decreased, and their values were YS = 1005 to 1065 MPa, UTS = 1010 to 1065 MPa, El = 0.3 to 0.7%. Over-aging allowed an increase in elongation to a value as high as 8.5% at the values of YS = 805 MPa and UTS = 835 MPa at the cryogenic temperature. The deformed alloys showed mixed type of fracture. The fraction of the brittle component increased when the temperature decreased. Although they showed high elongation, the alloys in T7 condition fractured predominantly by intergranular mode at the cryogenic temperature. SUPPLEMENTARY NOTES

show abstract

Cryogenic Materials Data Handbook

Abstract: The background, organization, and maintenance of the Cryogenic Materials Data Handbook are discussed.An experimental program and its accomplishments in the past year are described.

Cited by 36 publications

References 0 publications

Materials Selection for the HFIR Cold Neutron Source

Materials Selection for the HFIR Cold Neutron Source

Critical Current and Fracture Behavior of Nb3Al Superconducting Strands under Cyclic Electromagnetic Force

Low Temperature Mechanical Properties of Scandium-Modified Al-Zn-Mg-Cu Alloys

Contact Info

Product

Resources

About