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low-temperature testing

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.tt2.t51060239
EISBN: 978-1-62708-355-3
...Abstract Abstract This chapter details low-temperature test procedures and equipment. It discusses the role temperature plays in the properties of typical engineering materials. The effect that lowering the temperature of a solid has on the mechanical properties of a material is summarized...
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Published: 01 December 2004
Fig. 2 A 100 kN capacity test machine equipped with cryostat for low-temperature testing More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1983
DOI: 10.31399/asm.tb.mlt.t62860237
EISBN: 978-1-62708-348-5
.... The effects of cryogenic temperatures on the mechanical properties of metals and alloys are reviewed in this chapter; the effects on polymers and glasses are discussed briefly. The fundamental mechanisms controlling temperature-dependent mechanical behavior, phenomena encountered in low-temperature testing...
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Published: 01 September 2008
Fig. 20 AISI 1340 steel quenched and tempered (at different temperatures). A, unnotched sample at room-temperature test. B, unnotched sample at very low-temperature test. C, notched sample at room temperature. D, Charpy impact test at room temperature. Source: Ref 19 More
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Published: 01 March 2002
Fig. 13.15 Sketch of anticipated low-temperature attack rate (A) vs. actual (B) test rig and engine hot corrosion rates for a nickel-base superalloy turbine airfoil More
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Published: 01 December 2004
Fig. 3 Schematic of simple tensile canister from a standard-configuration machine for low-temperature testing More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410213
EISBN: 978-1-62708-265-5
... absorbed in fracture decreases dramatically with decreasing test temperature, until a low-energy, lower shelf is obtained. Reduced rates of straining lower the temperature at which brittle fracture develops but cannot suppress brittle, low-energy fracture. Fig. 11.5 Schematic diagram comparing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410405
EISBN: 978-1-62708-265-5
... specimens tested at intermediate strain rates develop serrated yielding. Specimens tested at very low strain rates, i.e., those specimens that spend long times at temperature during a test, do not develop serrated yielding, and show high strain hardening and high values of uniform and total elongation...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ems.t53730023
EISBN: 978-1-62708-283-9
..., they frequently are used in equipment for applications that involve low temperatures. In the period 1948 to 1951, there were many fractures of natural gas pipelines. Most occurred during testing, and most started at welding defects but propagated through sound metal. One of the longest cracks was 975 m (3200...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200311
EISBN: 978-1-62708-354-6
... Martensitic high alloy steels Austenitic high alloy steels The ferritic carbon and low alloy steels are characterized by a distinct transition in fracture from ductile to brittle behavior when tested over a range of temperatures. Martensitic steels, both low alloy and high alloy, also exhibit...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.tt2.t51060163
EISBN: 978-1-62708-355-3
... with ceramic attachments and pullrods is also possible, because of the relatively low loads required to cause failure via the bending stresses in this test. This particular test has, in fact, been used quite successfully in the development of ceramics and CMCs for high-temperature heat exchangers, which...
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Published: 01 November 2012
Fig. 24 Tensile engineering stress-strain behavior as a function of temperature. (a) Schematic stress-strain curves for a typical polymer tested at four temperatures while the strain rate is kept constant. 1, low temperature, brittle behavior; 2, intermediate temperature, somewhat ductile; 3 More
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Published: 01 August 2005
Fig. 7.12 Tensile engineering stress-strain behavior as a function of temperature. (a) Schematic stress-strain curves for a typical polymer tested at four temperatures while the strain rate is kept constant. 1, Low temperature, brittle behavior; 2, intermediate temperature, somewhat ductile; 3 More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130285
EISBN: 978-1-62708-284-6
... test. B, unnotched sample at very low-temperature test. C, notched sample at room temperature. D, Charpy impact test at room temperature. Source: Ref 19 Figure 21 indicates that the embrittlement phenomenon of tempered martensite is just sensitive to determinate test conditions. The room...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1983
DOI: 10.31399/asm.tb.mlt.t62860269
EISBN: 978-1-62708-348-5
... geometry suitable for bar stock Limited applicability Wedge-opening loading specimen Larger width than compact specimen May be bolt loaded at one end Expense of machining 8.4.5 Apparatus Cryostats are chambers for applying loads to test specimens in low-temperature...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080249
EISBN: 978-1-62708-304-1
... significant increases in low-temperature hot corrosion resistance (750 °C, or 1380 °F) for these materials ( Ref 30 ). Both IN939 (23% Cr) and NiCrAlY coating (39% Cr) were found to exhibit good low-temperature hot corrosion resistance. NiCrAlY coatings with 26, 34, and 42% Cr were tested and found...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770171
EISBN: 978-1-62708-337-9
... increases as the tempering temperature increases, up to 250 °C. However, in a low-cycle high-load regime, the contact-fatigue life diminishes as the tempering temperature increases ( Fig. 7.18 ). It was noted that the highly loaded test tracks of the untempered disks increased in hardness by up to 85 HV...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200233
EISBN: 978-1-62708-354-6
... regions categorize the effect of service temperature on the strength of carbon and low alloy steels. In the lower region, the strength of the metal is independent of time and can be measured by normal tensile testing made at the elevated temperature. The breaking strength will not change with the time...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.tt2.t51060101
EISBN: 978-1-62708-355-3
.... For these materials, two or three n values may need to be calculated for the low, intermediate, and high strain regions. When Eq 2 is an accurate representation of material behavior, n = ln (1 + e u ), where e u is the uniform elongation, or elongation at maximum load in a tensile test. By definition...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1983
DOI: 10.31399/asm.tb.mlt.t62860371
EISBN: 978-1-62708-348-5
... not occur. The minimum temperature for Charpy testing in the United States is 20 K. A test facility for conducting the tests at 4 K is being used in the Soviet Union; however, it is likely that adiabatic heating limits the usefulness of data obtained below 20 K. Low-strain-rate tests using notched tensile...