Determination of the NDT temperature and Charpy v-notch impact properties
                        of AAR TC128 grade B steel and A 8XX grade B steel

Hicho, G E; Smith, J.H.

doi:10.6028/nist.ir.4300

Cited by 2 publications

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“…The NDT temperature and Charpy V-notch test results [6] Reference [7] and summarized in sections that follow. Subsequent to these reconfirmation tests, crack arrest fracture toughness tests were conducted for both steels by NIST and are reported in Reference [8].…”

Section: -5mentioning

confidence: 99%

“…This program examined three categories of 4-1 materials: (1) steels currently specified and used in tank car tank construction (current steels), (2) steels from tank car tanks involved in accidents (accident steels), and (3) Therefore, additional tests were conducted by NIST [9] to develop a comprehensive mechanical property and fracture toughness database for TCI 28 grade B steel in both normalized and stress relieved condition. These tests followed the same procedures as those used in previous test programs [6][7][8] and are summarized in appropriate sections. Because a crack may initiate from a weld or heataffected zone, a test program [10] was conducted to determine the crack arrest fracture toughness from welded plates of normalized AAR TC 1 28 grade B steel currently used in appropriate tank cars.…”

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confidence: 99%

“…Additional materials data were developed by NIST for the FRA and are contained in References [6][7][8][9][10][11]. This section presents a summary of the data for [3].…”

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confidence: 99%

“…These test programs [6][7][8][9][10] In the Phase 03 study [3] , tensile properties were determined in accordance with ASTM Specification A370, "Mechanical Testing of Steel Products." On the old steels both longitudinal and transverse tests were conducted.…”

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confidence: 99%

“…Nineteen cases of accident-related brittle fracture were analyzed in Reference [4] NDTT, and Charpy V-notch impact tests were also conducted for the present and future steels at both high and very low temperatures representing tank car fires and coldest regions of the North American continent [6][7][8][9][10][11]. These Reports (1990-92) generated data for normalized, inclusion shape controlled, and normalized and stress relieved conditions of AAR TC 128 grade B Steel, and microalloyed, control-rolled, and inclusion shape controlled A 8XX grade B Steel.…”

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confidence: 99%

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Materials and fracture mechanics assessments of railroad tank cars

Zahoor¹,

Hicho²

1998

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confidence: 99%

“…Additional materials data were developed by NIST for the FRA and are contained in References [6][7][8][9][10][11]. This section presents a summary of the data for [3].…”

mentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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Materials and fracture mechanics assessments of railroad tank cars

Zahoor¹,

Hicho²

1998

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The mechanical, stress-rupture, and fracture toughness properties of normalized and stress relieved AAR TC128 grade B steel at elevated temperatures

Hicho¹

1993

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The mechanical, fracture toughness, and stressrupture properties of a normalized and stress relieved tank car steel were found to be reduced by increased temperature and time at temperature. The effects of loading rates, 0.0127 and 0.127 cm/min, on these properties were also evaluated. Most affected was the yield strength, where at the loading rate of 0.127 cm/min, the yield strength as a function of temperature and time at temperature was greater than that obtained under similar test conditions at a loading rate of 0.0127 cm/min. The ultimate and yield strength were observed to decrease continuously from 593°C to 677°C for time of 60, 90, and 120 minutes. The ductility, in terms of the elongation and reductionofarea were found to increase over these same test temperatures and times. The fracture toughness, because of the yield strength decrease as the temperature increased, decreased as the test temperature increased. Fracture toughness tests found the steel to be highly resistant to unstable fracture, and stressrupture tests revealed that the rupture lifetime could be extended, at elevated temepratures , by reducing the maximum internal pressure of the tank car.

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Determination of the NDT temperature and Charpy v-notch impact properties of AAR TC128 grade B steel and A 8XX grade B steel

Cited by 2 publications

References 0 publications

Materials and fracture mechanics assessments of railroad tank cars

Materials and fracture mechanics assessments of railroad tank cars

The mechanical, stress-rupture, and fracture toughness properties of normalized and stress relieved AAR TC128 grade B steel at elevated temperatures

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