Physical Metallurgy of Light Alloys

Nie, Jian–Feng

doi:10.1016/b978-0-444-53770-6.00020-4

Cited by 80 publications

(108 citation statements)

References 309 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Such a relatively small degree of variant selection is able to accommodate the transformation strain among the favored variants without resulting in a significant internal stress and the sample ends up with a weak a texture (F ¼ 24:96 m.r.d. 2 ). In the RT sample, some b grains may orient to have a relatively large number of a variants favored (e.g., the 2nd grain, R 2 VS ¼ 0:5577 while others may only have a limited number of variants preferred by the initial loading (see the red bars in Fig.…”

Section: Effect Of Different Processing Parameters On Variant Selectimentioning

confidence: 93%

“…In addition, the texture index F for the ST sample is 50.38 Â m.r.d. 2 , while that for the RT sample is 22.38 Â m.r.d. 2 , which further distinguishes the texture of the two simulation volumes despite containing a very limited number of grains.…”

Section: Starting B Phase Polycrystalline Microstructure and Texturementioning

confidence: 98%

“…Titanium, Magnesium and Aluminum alloys) [2] and shape memory alloys [3], to name a few. Often well-defined orientation relationships (ORs) exist between the parent and transformed product phases.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Microstructure and transformation texture evolution during α precipitation in polycrystalline α/β titanium alloys – A simulation study

et al. 2015

View full text Add to dashboard Cite

Section: Effect Of Different Processing Parameters On Variant Selectimentioning

confidence: 93%

Section: Starting B Phase Polycrystalline Microstructure and Texturementioning

confidence: 98%

See 1 more Smart Citation

Microstructure and transformation texture evolution during α precipitation in polycrystalline α/β titanium alloys – A simulation study

et al. 2015

View full text Add to dashboard Cite

“…These alloys are increasingly being pursued by the automobile sector and also have a potential to replace commercial 2xxx series Al-alloys for aircraft fuselage [3,4]. By regulating the composition and ageing conditions of 6xxx series Al-alloys their strength can be increased [5]. The formation of nanometer-sized precipitates in these alloys during ageing results in an increase in the strength [6].…”

Section: Introductionmentioning

confidence: 99%

The Influence of Copper Additions and Aging on the Microstructure and Metastable Pitting of Al-Mg-Si Alloys

Kairy¹,

Rometsch²,

Davies³

et al. 2015

CORROSION

View full text Add to dashboard Cite

The metastable pitting of 6xxx series aluminium alloys (Al-Mg-Si-(Cu)) as a function of Cu content and ageing was studied. Potentiodynamic polarisation and potentiostatic transients were carried out to determine the electrochemical response of a family of 6xxx alloys based on a similar Si:Mg ratio. Additionally, the evolution of microstructure in all samples studied was also determined using transmission electron microscopy. The refinement in thickness of precipitates with the addition of Cu was shown to decrease the propensity for metastable pitting.

show abstract

“…The driving force behind rejection of excess solutes in the form of the precipitates is supersaturation [1,2]. The sluggish diffusion kinetics at low temperatures ensures that the solute atoms move through only a few tens of interatomic distance [3,4], hence giving rise to precipitation on a very fine scale. The precipitates of the second phase are generally coherent in nature.…”

mentioning

confidence: 99%

Effect of strain path change on precipitation behaviour of Al-Cu-Mg-Si alloy

Mishra

Kulkarni

Gurao

2015

IOP Conf. Ser.: Mater. Sci. Eng.

View full text Add to dashboard Cite

View the article online for updates and enhancements. Related contentEffect of strain path change on the texture evolution after cold rolling and recrystallization of Nickel-40 wt. %Cobalt alloy Gyan Shankar and Satyam Suwas -The effect of strain path change on subgrain volume fraction determined from in situ X-ray measurements C Wejdemann, H F Poulsen, U Lienert et al. Abstract. The effect of strain path change on precipitation behaviour of AlCu-Mg-Si alloy was investigated. Two different types of crystallographic textures were produced by changing the strain path during rolling. The deformed samples were subjected to a short recrystallization treatment and ageing to identify the effect of strain path change manifested in terms of crystallographic texture on precipitation behaviour. Preliminary characterization indicates that ageing kinetics as well as precipitate morphology vary depending upon the mode of rolling. The coherency strains associated with a coherent interface is relieved in a unlike manner for differently rolled samples. IntroductionPrecipitation hardening is produced by solutionizing and quenching an alloy in which the second phase precipitates out upon ageing at intermediate temperature. The requirement of a precipitation-hardening alloy is that the phase diagram should show a solvus viz. solid solubility limit should decrease with decrease in temperature. The driving force behind rejection of excess solutes in the form of the precipitates is supersaturation [1,2]. The sluggish diffusion kinetics at low temperatures ensures that the solute atoms move through only a few tens of interatomic distance [3,4], hence giving rise to precipitation on a very fine scale. The precipitates of the second phase are generally coherent in nature. If the mismatch between the lattice of matrix and precipitate is large, then considerable amount of coherency strain is associated with a coherent interface, giving rise to internal strain hardening. The main contribution to hardening comes from the interaction between the moving dislocations with finely dispersed precipitates [5,6]. The Al 6XXX alloys are precipitation hardenable alloys and precipitation hardening is the key aspect behind high strength to weight ratio of these alloys. The decomposition of supersaturated solid solution occurs is several steps involving transition precipitates before the equilibrium precipitate forms [7,8]. Generally the nucleation barrier for the formation of equilibrium precipitate is too high. The prerequisite of surface energy to create surfaces of critical-sized precipitates dominates over volume Gibbs free energy decrease during the initial stages of precipitation. Usually a sheet of agehardenable material undergoes some sought of thermo-mechanical processing involving deformation at room temperature and ageing at slightly elevated temperature [9,10]. Since the recrystallization temperature is higher than the ageing temperature, the alloy retains the polygonised structure, which has high density of dislocations. Thus, precipitation...

show abstract

Physical Metallurgy of Light Alloys

Cited by 80 publications

References 309 publications

Microstructure and transformation texture evolution during α precipitation in polycrystalline α/β titanium alloys – A simulation study

Microstructure and transformation texture evolution during α precipitation in polycrystalline α/β titanium alloys – A simulation study

The Influence of Copper Additions and Aging on the Microstructure and Metastable Pitting of Al-Mg-Si Alloys

Effect of strain path change on precipitation behaviour of Al-Cu-Mg-Si alloy

Contact Info

Product

Resources

About