Strain hardening behavior of a friction stir welded magnesium alloy

Afrin, N.; Chen, D.L.; Cao, X.; Jahazi, Mohammad

doi:10.1016/j.scriptamat.2007.08.001

Cited by 385 publications

(172 citation statements)

References 15 publications

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“…The onset of plastic deformation with an obvious strain hardening in composites represents a deformation mechanism of dislocation activity. The strain hardening of composites after yielding is mainly due to dislocation multiplication, accumulation and interaction [18][19][20]. As mentioned above, the σy of composites increases with increasing content of synthesized ceramic particles, which means that dislocation-nucleation threshold stress increases with the increase in ceramic content, that is the activation of dislocations becomes more difficult.…”

Section: Compression Properties and Work-hardening Capacitymentioning

confidence: 94%

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Effect of Ceramic Content on the Compression Properties of TiB2-Ti2AlC/TiAl Composites

Shu

Tong

Qiu

et al. 2015

Metals

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Abstract:In situ synthesized TiB2-reinforced TiAl composites usually possess high strength. However, it is very expensive to use B powder to synthesize TiB2 particles. Moreover, the strength enhancement of TiB2/TiAl composite is generally at the cost of plasticity. In this study, in situ dual reinforcement TiB2-Ti2AlC/TiAl composites were fabricated by using B4C powder as the B and C source, which greatly reduces the potential production cost. The 6 vol. % TiB2-Ti2AlC/TiAl composite fabricated by using the Ti-Al-B4C system shows greatly improved compressive properties, i.e., 316 MPa and 234 MPa higher than those of TiAl alloy and with no sacrifice in plasticity.

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Section: Compression Properties and Work-hardening Capacitymentioning

confidence: 94%

“…The work-hardening capacity of composites is calculated according to the formulary (Hc) (Hc = (σucs − σy)/σy) [18]. The results are listed in Table 1.…”

Section: Compression Properties and Work-hardening Capacitymentioning

confidence: 99%

Effect of Ceramic Content on the Compression Properties of TiB2-Ti2AlC/TiAl Composites

Shu

Tong

Qiu

et al. 2015

Metals

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“…The following strain hardening model takes into account the effects of grain size and dislocation [73]:…”

Section: Tensile Propertiesmentioning

confidence: 99%

A Review: Effect of Friction Stir Welding on Microstructure and Mechanical Properties of Magnesium Alloys

Qin

Liu

et al. 2017

Metals

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Friction stir welding (FSW) is well recognized as a very practical technology for joining magnesium alloys. Although, a large amount of progress have been made on the FSW of magnesium alloys, it should be emphasized that many challenges still remain in joining magnesium using FSW. In this article, we briefly review the background of friction stir welding of magnesium alloys, and then focus on the effects of the friction stir welding on the macrostructure, microstructure evolution, texture distribution, and the mechanical properties of the welding joints. The macro-defects in welds and their relationship to the welding parameters such as welding speed, rotation speed, and axial force were also discussed. The review concluded with some suggested methods improvement and future challenges related to FSW of magnesium alloys. The purpose of the present review paper is to fully understand the relationships between the microstructure and the properties, and then establish a global, state-of-the-art FSW of magnesium alloys.

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“…The proper welding condition for dissimilar A5052-H and AZ31B FSW joint were more limited region than that for A5XXX or AZ31B FSW joint. [11][12][13][14][15][16][17][18] 3.2 Microstructural observation and hardness distributions As-received A5052-H alloy had 20$30 [mm] of the grain diameter. After FSW, the grain size was refined to c.a.…”

Section: Rapid Publicationmentioning

confidence: 99%

Dissimilar Welding of Al and Mg Alloys by FSW

et al. 2008

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Microstructures and mechanical properties of dissimilar welding joint between Al alloy and Mg alloy by Friction Stir Welding (FSW) were investigated in comparison with laser welding of the same combination. Dissimilar joint of Al and Mg alloy by laser welding was very brittle because of building up Mg 17 Al 12 inter metallic compounds in fusion zone. On the other hand, FSW is anticipated to welding dissimilar alloys with enough joint strength because it is a solid-state process without melting. In this paper, FSW was carried out to make dissimilar butt joints of Al alloy and AZ31 magnesium alloy with various tool rotational speed and welding speed. These joints showed higher hardness in their stir zones than that of parent AZ31 alloy because of Mg-Al inter metallic compound formation. However, the hardness of stir zone was lower than that of fusion zone of laser welding, and was changed with the welding parameters of tool rotational speed and welding speed (i.e. heat input ratio of FSW). The optimum welding conditions of Mg and Al dissimilar FSW joint and the influence of inter metallic compound distribution with mixing of materials in stir zone were discussed.

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Strain hardening behavior of a friction stir welded magnesium alloy

Cited by 385 publications

References 15 publications

Effect of Ceramic Content on the Compression Properties of TiB2-Ti2AlC/TiAl Composites

Effect of Ceramic Content on the Compression Properties of TiB2-Ti2AlC/TiAl Composites

A Review: Effect of Friction Stir Welding on Microstructure and Mechanical Properties of Magnesium Alloys

Dissimilar Welding of Al and Mg Alloys by FSW

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