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

Department of Mechanical Engineering

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

12 Scopus citations

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.

Original language	English
Pages (from-to)	89-92
Number of pages	4
Journal	Materials Letters
Volume	204
DOIs	https://doi.org/10.1016/j.matlet.2017.06.014
State	Published - 1 Oct 2017

Bibliographical note

Publisher Copyright:
© 2017 Elsevier B.V.

Keywords

High-strength low-alloy (HSLA) D6AC steel
Phase transformation
Tempering temperature
Welding

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10.1016/j.matlet.2017.06.014

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

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 - Huang, Chi Zhi

AU - Su, Cherng Yuh

AU - Chen, Cheng Shun

PY - 2017/10/1

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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

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EP - 92

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

Abstract

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Keywords

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