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首页> 外文期刊>Scripta materialia >Deformation induced defects in iron revealed by thermal desorption spectrosocpy of tritium.
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Deformation induced defects in iron revealed by thermal desorption spectrosocpy of tritium.

机译：的热解吸光谱显示出变形引起的铁缺陷。

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摘要

Thermal desorption of tritium chargedinto deformed 0.025 mass% C steel specimens mostlytook place in the temperature range between 100-200 deg C and the amount of desorption after aconstant charging condition increased with thegiven amount of strain and lowering of deformationtemperatures. Aging of the deformed specimens attemperatures up to 200 deg C prior to the tritiumcharging remarkably reduced the desorption. Thedesorption behavior is consistent with theannihilation of vacancy-clusters and vacancy-carbon pairs which act as the trapping sites oftritium. The estimated defect density is of theorder of 10 exp -4 . The high density of point-like defects may play an essential role on thefracture process in the ductile-brittle transitionregion associated with plastic deformation. TDSof tritium or hydrogen can also be a measure ofthe defect density rather than the indication ofhydrogen at stable trapping sites.
机译：充入变形的0.025质量％C钢试样中的t的热脱附大多发生在100-200℃之间的温度范围内，并且在恒定的带电条件下，随着给定的应变量和变形温度的降低，脱附量增加。在char充电之前，在高达200摄氏度的温度下对变形试样进行时效处理，显着降低了脱附。解吸行为与as的俘获部位空位簇和空位碳对的an灭相一致。估计的缺陷密度约为10 exp -4。点状缺陷的高密度可能在与塑性变形相关的韧性-脆性过渡区的断裂过程中起重要作用。 or或氢的TDS也可以衡量缺陷密度，而不是在稳定的俘获位点指示氢。

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