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【Mechanical Equipment Technology Exchange Edition】Mechanical Equipment 【Daily Question】20190730

2019-07-30View Original

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Question: What is the brittle transition temperature of metallic materials? There are no answers provided for this series of posts; fellow netizens are free to share their own opinions – just reply with what you understand. Replies earn rewards ranging from 5 to 15 points; all forum members are welcome to participate actively and support the development of the forum! ! ! Chemical Equipment and Machinery
Reply #22019-07-30
The brittle transition temperature refers to the temperature at which, as determined by impact testing, a metal material experiences a significant decrease in plasticity and a significant increase in brittleness as the temperature drops. Ferritic steels generally have this transformation temperature. As the temperature drops to a certain range, the impact value of steel experiences a sudden decrease, resulting in an upper plateau and a lower plateau for this impact value. This indicates that steel should not be used below its brittle transition temperature to avoid fracture accidents
Reply #32019-07-30
The brittle transition temperature refers to the temperature at which, as determined by impact testing, a metal material experiences a significant decrease in plasticity and a significant increase in brittleness as the temperature drops. Ferritic steels generally have this transformation temperature. As the temperature drops to a certain range, the impact value of steel experiences a sudden decrease, resulting in an upper plateau and a lower plateau for this impact value. This indicates that steel should not be used below its brittle transition temperature to avoid fracture accidents
Reply #42019-07-31
The brittle transition temperature refers to the temperature at which, as determined by impact testing, a metal material experiences a significant decrease in plasticity and a significant increase in brittleness as the temperature drops. Ferritic steels generally have this transformation temperature. As the temperature drops to a certain range, the impact value of steel experiences a sudden decrease, resulting in an upper plateau and a lower plateau for this impact value. This indicates that steel should not be used below its brittle transition temperature to avoid fracture accidents
Reply #52019-07-31
The metal’s brittle transition temperature refers to the temperature, determined through impact testing, at which a metal material experiences a significant decrease in plasticity and an increase in brittleness as the temperature drops.
Reply #62019-07-31
Steel exhibits high impact toughness, i.e., good plasticity, at certain operating temperatures; however, as the temperature drops, its impact toughness decreases. The temperature at which this impact toughness declines significantly is known as the metal’s low-temperature fragility transition temperature (FATT value). For CrM. For V-alloy steel, the transition temperature for its low-temperature brittleness is generally between 80 and 130°C.
Reply #72019-07-31
The brittle transition temperature refers to the temperature at which, as determined by impact testing, a metal material experiences a significant decrease in plasticity and a significant increase in brittleness as the temperature drops.
Reply #82019-07-31
The brittle transition temperature refers to the temperature at which, as determined by impact testing, a metal material experiences a significant decrease in plasticity and a significant increase in brittleness as the temperature drops. Ferritic steels generally have this transformation temperature. As the temperature drops to a certain range, the impact value of steel experiences a sudden decrease, resulting in an upper plateau and a lower plateau for this impact value. This indicates that steel should not be used below its brittle transition temperature to avoid fracture accidents
Reply #92019-07-31
The brittle transition temperature is the temperature at which a metal material experiences a significant decrease in plasticity and a significant increase in brittleness. Regarding steel, when the temperature drops to a certain range, the impact value of the steel experiences a sudden decrease, with upper and lower limits for this impact value. This indicates that the steel should not be used below its brittle transition temperature to avoid fracture accidents.
Reply #102019-07-31
Any metal material will become brittle at a certain temperature at low levels; this temperature at which plasticity is lost and the material turns brittle is known as the low-temperature brittleness transition temperature.
Reply #112019-07-31
This is one of the characteristics of metallic materials: any metallic material becomes brittle at a certain temperature at low levels; this temperature at which plasticity is lost and brittleness takes over is known as the temperature of low-temperature brittleness transition. The temperature at which the plasticity of a metal material decreases significantly and its brittleness increases markedly as the temperature drops is known as the brittle transition temperature of that metal material. Ferritic steels generally have this transformation temperature. As the temperature drops to a certain range, the impact value of steel experiences a sudden decrease, resulting in an upper plateau and a lower plateau for this impact value. This indicates that steel should not be used below its brittle transition temperature to avoid fracture accidents.

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