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Book Chapter

Ductile Fracture

Available to Purchase

Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630101
EISBN: 978-1-62708-270-9
... Abstract Ductile fracture results from the application of an excessive stress to a metal that has the ability to deform permanently, or plastically, prior to fracture. Careful examination and knowledge of the metal, its thermal history, and its hardness are important in determining the correct...
Abstract
Ductile fracture results from the application of an excessive stress to a metal that has the ability to deform permanently, or plastically, prior to fracture. Careful examination and knowledge of the metal, its thermal history, and its hardness are important in determining the correct nature of the fracture features. This chapter is a detailed account of the general characteristics and microstructural aspects of ductile fracture with suitable illustrations. It describes some of the complicating factors extraneous to the fracture itself.
View PDF for content titled, <span class="search-highlight">Ductile</span> <span class="search-highlight">Fracture</span>
Book Chapter

Ductile and Brittle Fracture

Available to Purchase

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610055
EISBN: 978-1-62708-303-4
... Abstract This chapter discusses the causes and effects of ductile and brittle fracture and their key differences. It describes the characteristics of ductile fracture, explaining how microvoids develop and coalesce into larger cavities that are rapidly pulled apart, leaving bowl-shaped voids...
Abstract
This chapter discusses the causes and effects of ductile and brittle fracture and their key differences. It describes the characteristics of ductile fracture, explaining how microvoids develop and coalesce into larger cavities that are rapidly pulled apart, leaving bowl-shaped voids or dimples on each side of the fracture surface. It includes SEM images showing how the cavities form, how they progress to final failure, and how dimples vary in shape based on loading conditions. The chapter, likewise, describes the characteristics of brittle fracture, explaining why it occurs and how it appears under various levels of magnification. It also discusses the ductile-to-brittle transition observed in steel, the characteristics of intergranular fracture, and the causes of embrittlement.
View PDF for content titled, <span class="search-highlight">Ductile</span> and Brittle <span class="search-highlight">Fracture</span>
Image

Appearance of (a) ductile and (b) brittle tensile fractures in unnotched cy...

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in Introduction to Fatigue and Fracture > Fatigue and Fracture<subtitle>Understanding the Basics</subtitle>
Published: 01 November 2012
Fig. 2 Appearance of (a) ductile and (b) brittle tensile fractures in unnotched cylindrical specimens. Courtesy of G. Vander Voort. Source: Ref 3 More
Image

Appearance of ductile (a) and brittle (b) tensile fractures. Source: Ref 2...

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in Mechanical Behavior of Materials under Tensile Loads > Tensile Testing
Published: 01 December 2004
Fig. 19 Appearance of ductile (a) and brittle (b) tensile fractures. Source: Ref 28 More
Image

(a) Ductile fracture and (b) brittle fracture in ductile cast iron. SE, SEM...

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in Cast Irons > Metallography of Steels: Interpretation of Structure and the Effects of Processing
Published: 01 August 2018
Fig. 17.79 (a) Ductile fracture and (b) brittle fracture in ductile cast iron. SE, SEM. Not etched. The aspect of graphite and its role in the fracture process are evident. Courtesy of J. Sertucha, Azterlan, Centro de Investigacion Metalurgica, Durango, Bizkaia, Spain. More
Image

General fracture-surface regions from ductile fracture of an unnotched (a) ...

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in Deformation and Fracture Mechanisms and Static Strength of Metals > Mechanics and Mechanisms of Fracture<subtitle>An Introduction</subtitle>
Published: 01 August 2005
Fig. 2.50 General fracture-surface regions from ductile fracture of an unnotched (a) and notched (b) tension test bar. (a) Radial zones on an unnotched point to the region of crack initiation near the center of the specimen. (b) In the notched tensile specimen, the fibrous zone surrounds More
Image

Typical dimpled rupture fracture surface of a ductile fracture viewed at a ...

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in General Procedures for Failure Analysis[1] > How to Organize and Run a Failure Investigation
Published: 01 August 2005
Fig. 6 Typical dimpled rupture fracture surface of a ductile fracture viewed at a magnification of 2000× and at an angle of about 40–50° to the fracture surface More
Image

Impact curves and % of fracture surface showing fibrous (ductile) fracture ...

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in Tempering > Principles of the Heat Treatment of Plain Carbon and Low Alloy Steels
Published: 01 December 1996
Fig. 5-62 Impact curves and % of fracture surface showing fibrous (ductile) fracture of a 3140 steel for different aging times at 500 °C. The samples were austenitized for one hour at 900 °C, water quenched, tempered for one hour at 675 °C, water quenched, then aged at 500 °C for the times More
Image

Cup-and-cone ductile fracture of a low-carbon steel bar under tension

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in The Durability of Metals and Alloys > Metallurgy for the Non-Metallurgist
Published: 01 October 2011
Fig. 16.18 Cup-and-cone ductile fracture of a low-carbon steel bar under tension More
Image

SEM micrograph showing a ductile fracture mode observed over the majority o...

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in Component Design > Failure Analysis of Heat Treated Steel Components
Published: 01 September 2008
Fig. 38 SEM micrograph showing a ductile fracture mode observed over the majority of both fracture surfaces. Original magnification: 1000×. Source: Ref 20 More
Image

Example of a macroscale ductile fracture in tensile loading

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in Mechanisms and Causes of Failures in Heat Treated Steel Parts > Failure Analysis of Heat Treated Steel Components
Published: 01 September 2008
Fig. 2 Example of a macroscale ductile fracture in tensile loading More
Image

Example of a macroscale ductile fracture in torsional loading

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in Mechanisms and Causes of Failures in Heat Treated Steel Parts > Failure Analysis of Heat Treated Steel Components
Published: 01 September 2008
Fig. 5 Example of a macroscale ductile fracture in torsional loading More
Image

Ductile fracture showing the typical cup-cone geometry

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in General Aspects of Failure Analysis > Failure Analysis of Heat Treated Steel Components
Published: 01 September 2008
Fig. 1 Ductile fracture showing the typical cup-cone geometry More
Image

Ductile fracture in 1038 steel bolt. The bolt was annealed to a hardness of...

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in Ductile and Brittle Fracture > Fatigue and Fracture<subtitle>Understanding the Basics</subtitle>
Published: 01 November 2012
Fig. 1 Ductile fracture in 1038 steel bolt. The bolt was annealed to a hardness of 95 HRB (equivalent to 15 HRC) and shows tremendous permanent deformation. Source: Ref 1 More
Image

Examples of ductile fracture on shear planes. (a) Void sheets from propagat...

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in Ductile and Brittle Fracture > Fatigue and Fracture<subtitle>Understanding the Basics</subtitle>
Published: 01 November 2012
Fig. 13 Examples of ductile fracture on shear planes. (a) Void sheets from propagation of a crack between widely spaced inclusions within a shear band in a 4340 steel. Stress axis is vertical. Reprinted with permission from ASTM STP600, Fractography—Microscopic Cracking Processes , copyright More
Image

Schematic of the brittle-to-ductile fracture transition. The relative area ...

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in Deformation and Fracture Mechanisms and Static Strength of Metals > Mechanics and Mechanisms of Fracture<subtitle>An Introduction</subtitle>
Published: 01 August 2005
Fig. 2.53 Schematic of the brittle-to-ductile fracture transition. The relative area on the fracture surface of the three microscale fracture mechanisms (stretch zone, dimple zone, and cleavage zone) are indicated. Source: Ref 2.27 More
Image

Influence of temperature on ductility (fracture strain) for S-65C beryllium...

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in Mechanical Properties of Beryllium > Beryllium Chemistry and Processing
Published: 01 July 2009
Fig. 17.18 Influence of temperature on ductility (fracture strain) for S-65C beryllium. Source: Goods and Dombrowski 1997 More
Image

Scanning electron micrograph illustrating ductile fracture surface topograp...

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in Tensile Testing of Metals and Alloys > Tensile Testing
Published: 01 December 2004
Fig. 32 Scanning electron micrograph illustrating ductile fracture surface topography. This fracture topography is identified as microvoid coalescence. More
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Ductile fracture R curve

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in Fracture Mechanics and Service Fitness of Welds[1] > Weld Integrity and Performance
Published: 01 July 1997
Fig. 2 Ductile fracture R curve More
Image

Percent ductile fracture vs. test temperature for the submerged arc bead-in...

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in Properties of Carbon Alloy Steel Welds[1] > Weld Integrity and Performance
Published: 01 July 1997
Fig. 18 Percent ductile fracture vs. test temperature for the submerged arc bead-in-groove welds deposited in HY-80 steel. The numbers 1 through 4 accompanying the alloy designation represent heat input levels in kJ/mm. Source: Ref 16 More