Temperature dependence of transgranular fatigue crack resistance in interstitial-free steel and Fe-C steels with supersaturated carbon: Effects of dynamic strain aging and dynamic precipitation

Bochuan Li; Motomichi Koyama; Eisaku Sakurada; Nobuyuki Yoshimura; Kohsaku Ushioda; Hiroshi Noguchi

doi:10.1016/j.ijfatigue.2018.01.003

Temperature dependence of transgranular fatigue crack resistance in interstitial-free steel and Fe-C steels with supersaturated carbon: Effects of dynamic strain aging and dynamic precipitation

Bochuan Li, Motomichi Koyama, Eisaku Sakurada, Nobuyuki Yoshimura, Kohsaku Ushioda, Hiroshi Noguchi

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

Tension tests at different temperatures were conducted for two ferritic steels: Fe-0.017C with 0.017% solute carbon content and interstitial-free (IF) steels. It is verified the occurrence of dynamic strain aging (DSA) in Fe-0.017C at high temperatures. Tension tests for the Fe-0.017C, following corresponding heating treatments, demonstrated the transition process of dynamic precipitation from under-aging to over-aging. Moreover, the threshold stress intensity factor ranges (ΔK_th) of a small crack for these two steels both decrease with temperature growth. However, the ΔK_th of Fe-0.017C was always larger than that of IF steel owing to solid solution hardening and DSA at 293 and 333 K and roughness-induced crack closure and precipitation hardening at 433 K.

Original language	English
Pages (from-to)	1-9
Number of pages	9
Journal	International Journal of Fatigue
Volume	110
DOIs	https://doi.org/10.1016/j.ijfatigue.2018.01.003
Publication status	Published - 2018 May
Externally published	Yes

Keywords

Dynamic precipitation
Dynamic strain aging
Interstitial solute carbon
Roughness-induced crack closure
Threshold stress intensity factor ranges

ASJC Scopus subject areas

Modelling and Simulation
Materials Science(all)
Mechanics of Materials
Mechanical Engineering
Industrial and Manufacturing Engineering

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10.1016/j.ijfatigue.2018.01.003

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Li, B., Koyama, M., Sakurada, E., Yoshimura, N., Ushioda, K., & Noguchi, H. (2018). Temperature dependence of transgranular fatigue crack resistance in interstitial-free steel and Fe-C steels with supersaturated carbon: Effects of dynamic strain aging and dynamic precipitation. International Journal of Fatigue, 110, 1-9. https://doi.org/10.1016/j.ijfatigue.2018.01.003

Temperature dependence of transgranular fatigue crack resistance in interstitial-free steel and Fe-C steels with supersaturated carbon : Effects of dynamic strain aging and dynamic precipitation. / Li, Bochuan; Koyama, Motomichi; Sakurada, Eisaku; Yoshimura, Nobuyuki; Ushioda, Kohsaku; Noguchi, Hiroshi.

In: International Journal of Fatigue, Vol. 110, 05.2018, p. 1-9.

Research output: Contribution to journal › Article › peer-review

Li, B, Koyama, M, Sakurada, E, Yoshimura, N, Ushioda, K & Noguchi, H 2018, 'Temperature dependence of transgranular fatigue crack resistance in interstitial-free steel and Fe-C steels with supersaturated carbon: Effects of dynamic strain aging and dynamic precipitation', International Journal of Fatigue, vol. 110, pp. 1-9. https://doi.org/10.1016/j.ijfatigue.2018.01.003

Li, Bochuan ; Koyama, Motomichi ; Sakurada, Eisaku ; Yoshimura, Nobuyuki ; Ushioda, Kohsaku ; Noguchi, Hiroshi. / Temperature dependence of transgranular fatigue crack resistance in interstitial-free steel and Fe-C steels with supersaturated carbon : Effects of dynamic strain aging and dynamic precipitation. In: International Journal of Fatigue. 2018 ; Vol. 110. pp. 1-9.

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title = "Temperature dependence of transgranular fatigue crack resistance in interstitial-free steel and Fe-C steels with supersaturated carbon: Effects of dynamic strain aging and dynamic precipitation",

abstract = "Tension tests at different temperatures were conducted for two ferritic steels: Fe-0.017C with 0.017% solute carbon content and interstitial-free (IF) steels. It is verified the occurrence of dynamic strain aging (DSA) in Fe-0.017C at high temperatures. Tension tests for the Fe-0.017C, following corresponding heating treatments, demonstrated the transition process of dynamic precipitation from under-aging to over-aging. Moreover, the threshold stress intensity factor ranges (ΔKth) of a small crack for these two steels both decrease with temperature growth. However, the ΔKth of Fe-0.017C was always larger than that of IF steel owing to solid solution hardening and DSA at 293 and 333 K and roughness-induced crack closure and precipitation hardening at 433 K.",

keywords = "Dynamic precipitation, Dynamic strain aging, Interstitial solute carbon, Roughness-induced crack closure, Threshold stress intensity factor ranges",

author = "Bochuan Li and Motomichi Koyama and Eisaku Sakurada and Nobuyuki Yoshimura and Kohsaku Ushioda and Hiroshi Noguchi",

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T2 - Effects of dynamic strain aging and dynamic precipitation

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AU - Koyama, Motomichi

AU - Sakurada, Eisaku

AU - Yoshimura, Nobuyuki

AU - Ushioda, Kohsaku

AU - Noguchi, Hiroshi

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N2 - Tension tests at different temperatures were conducted for two ferritic steels: Fe-0.017C with 0.017% solute carbon content and interstitial-free (IF) steels. It is verified the occurrence of dynamic strain aging (DSA) in Fe-0.017C at high temperatures. Tension tests for the Fe-0.017C, following corresponding heating treatments, demonstrated the transition process of dynamic precipitation from under-aging to over-aging. Moreover, the threshold stress intensity factor ranges (ΔKth) of a small crack for these two steels both decrease with temperature growth. However, the ΔKth of Fe-0.017C was always larger than that of IF steel owing to solid solution hardening and DSA at 293 and 333 K and roughness-induced crack closure and precipitation hardening at 433 K.

AB - Tension tests at different temperatures were conducted for two ferritic steels: Fe-0.017C with 0.017% solute carbon content and interstitial-free (IF) steels. It is verified the occurrence of dynamic strain aging (DSA) in Fe-0.017C at high temperatures. Tension tests for the Fe-0.017C, following corresponding heating treatments, demonstrated the transition process of dynamic precipitation from under-aging to over-aging. Moreover, the threshold stress intensity factor ranges (ΔKth) of a small crack for these two steels both decrease with temperature growth. However, the ΔKth of Fe-0.017C was always larger than that of IF steel owing to solid solution hardening and DSA at 293 and 333 K and roughness-induced crack closure and precipitation hardening at 433 K.

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