The Effect of Austenitizing Conditions on the Mechanical Properties and on Hardenability of Hardened Carbon Steel

Iijima, Kazuaki

doi:10.2320/matertrans1960.4.52

Cited by 2 publications

(2 citation statements)

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“…It should be emphasized that the daughter area corresponds to the resultant twin area due to martensitic transformation, which clearly increases with increasing dwell time. In carbon steels, it had been reported that larger prior γ grain size could enhance the hardenability, namely, martensitic transformation 19–21 . In the present case, larger prior β grain also enhanced martensitic transformation of CP‐Ti.…”

Section: Resultssupporting

confidence: 52%

“…In carbon steels, it had been reported that larger prior γ grain size could enhance the hardenability, namely, martensitic transformation. [19][20][21] In the present case, larger prior β grain also enhanced martensitic transformation of CP-Ti. Figure 9 shows Vickers hardness as a function of the dwell time at 1000 C. The hardness in the previous study using the same material 17 is also shown in the figure.…”

Section: Microstructuresmentioning

confidence: 82%

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Effect of heat treatment at the temperature above β‐transus on the microstructures and fatigue properties of pure Ti

Uematsu

Huang

Kakiuchi

et al. 2020

Fatigue Fract Eng Mat Struct

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Commercially pure Ti (CP-Ti) was heat treated at 1273 K (1000 C), which was higher than β-transus temperature, followed by water quenching. The dwell time at 1000 C was changed from 1 to 240 h. The heat treatment at 1000 C resulted in α grain coarsening, whereas martensitic transformation occurred due to the rapid cooling from β phase. The hardness increased by the martensitic transformation, where higher hardness was achieved by longer dwell time at 1000 C. However, the fatigue strengths of the heat-treated CP-Ti were lower than that of the as-received one. The fatigue strength of the specimen with the shortest dwell time of 1 h was the lowest among the heat-treated samples with different dwell times. Untransformed coarse α grains were seen in the heattreated specimens, which resulted in the lower fatigue crack initiation resistance and fatigue strength than the as-received specimen.

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Section: Resultssupporting

confidence: 52%