Effects of tempering temperature on fatigue crack propagation behavior of high-strength low-alloy D6AC steel plasma arc welds

Chun Ming Lin; Chi Zhi Huang; Cherng Yuh Su; Cheng Shun Chen

doi:10.1016/j.matlet.2017.06.014

Effects of tempering temperature on fatigue crack propagation behavior of high-strength low-alloy D6AC steel plasma arc welds

Chun Ming Lin
, Chi Zhi Huang
, Cherng Yuh Su
, Cheng Shun Chen

機械工程系

研究成果: 期刊貢獻 › 文章 › 同行評審

12 引文斯高帕斯（Scopus）

摘要

The objective in this study was to elucidate fatigue crack propagation in D6AC steel plasma arc weldments (PAWs) that underwent post-weld (PW) tempering at 300 °C, 450 °C, or 600 °C. PW tempering at 600 °C was shown to enhance the refinement of the microstructure and thereby increase resistance to the growth of fatigue cracks. Surfaces with fatigue fracturing presented quasi-cleavage planes and intergranular fracture modes. The zigzag nature of the crack path (i.e., crack deflection) may contribute to the retardation of fatigue crack propagation.

原文	English
頁（從 - 到）	89-92
頁數	4
期刊	Materials Letters
卷	204
DOIs	https://doi.org/10.1016/j.matlet.2017.06.014
出版狀態	Published - 1 10月 2017

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© 2017 Elsevier B.V.

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10.1016/j.matlet.2017.06.014

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abstract = "The objective in this study was to elucidate fatigue crack propagation in D6AC steel plasma arc weldments (PAWs) that underwent post-weld (PW) tempering at 300 °C, 450 °C, or 600 °C. PW tempering at 600 °C was shown to enhance the refinement of the microstructure and thereby increase resistance to the growth of fatigue cracks. Surfaces with fatigue fracturing presented quasi-cleavage planes and intergranular fracture modes. The zigzag nature of the crack path (i.e., crack deflection) may contribute to the retardation of fatigue crack propagation.",

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AU - Lin, Chun Ming

AU - Huang, Chi Zhi

AU - Su, Cherng Yuh

AU - Chen, Cheng Shun

PY - 2017/10/1

Y1 - 2017/10/1

N2 - The objective in this study was to elucidate fatigue crack propagation in D6AC steel plasma arc weldments (PAWs) that underwent post-weld (PW) tempering at 300 °C, 450 °C, or 600 °C. PW tempering at 600 °C was shown to enhance the refinement of the microstructure and thereby increase resistance to the growth of fatigue cracks. Surfaces with fatigue fracturing presented quasi-cleavage planes and intergranular fracture modes. The zigzag nature of the crack path (i.e., crack deflection) may contribute to the retardation of fatigue crack propagation.

AB - The objective in this study was to elucidate fatigue crack propagation in D6AC steel plasma arc weldments (PAWs) that underwent post-weld (PW) tempering at 300 °C, 450 °C, or 600 °C. PW tempering at 600 °C was shown to enhance the refinement of the microstructure and thereby increase resistance to the growth of fatigue cracks. Surfaces with fatigue fracturing presented quasi-cleavage planes and intergranular fracture modes. The zigzag nature of the crack path (i.e., crack deflection) may contribute to the retardation of fatigue crack propagation.

KW - High-strength low-alloy (HSLA) D6AC steel

KW - Phase transformation

KW - Tempering temperature

KW - Welding

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VL - 204

SP - 89

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JO - Materials Letters

JF - Materials Letters

ER -

Effects of tempering temperature on fatigue crack propagation behavior of high-strength low-alloy D6AC steel plasma arc welds

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