Correlation of mechanical properties with non-destructive evaluation measurements in AlLi alloys

Brasche, L.; Bracci, D. J.; Jiles, David; Buck, O.

doi:10.1016/0921-5093(89)90518-2

Cited by 7 publications

(5 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Both yield and tensile strengths are found to change linearly with Mayer hardness. Brasche et al [5] and Koch and Kolijn [6] also studied the properties, such as strength, fracture toughness and stress corrosion cracking, non-destructively.…”

Section: Introductionmentioning

confidence: 99%

Correlation of Strength with Hardness and Electrical Conductivity for Aluminium Alloy 7010

Salazar-Guapuriche

Zhao

Pitman

et al. 2006

MSF

View full text Add to dashboard Cite

The tensile strength, proof strength, hardness and electrical conductivity of Al alloy 7010 under different temper and ageing conditions were investigated with the aim to correlate strength with hardness and electrical conductivity so that the strength of the alloy can be determined nondestructively. Following the solutionising treatment, continuous age hardening was performed on a series of test coupons, taken from a large plate, to produce a wide range of precipitation hardening conditions, which gave rise to progressive variations of strength, hardness and conductivity. The relationship between strength and hardness was found to be reasonably linear, whereas the relationship between hardness and strength with electrical conductivity was non-linear. The ageing conditions and therefore the mechanical properties of the components can be predicted more accurately by the simultaneous combination of hardness and conductivity values.

show abstract

Section: Introductionmentioning

confidence: 99%

Correlation of Strength with Hardness and Electrical Conductivity for Aluminium Alloy 7010

Salazar-Guapuriche

Zhao

Pitman

et al. 2006

MSF

View full text Add to dashboard Cite

show abstract

“…The increase in conductivity after 500 h suggests that the presence of strain fields associated with the formation of T 1 also plays an active role in this phenomenon as proposed by Brasche and co-workers. 4,5 Yamamoto 7 has also shown the strain fields associated with T 1 during the early stages of aging using a weak beam contrast experiment. It was also observed that these strain fields disappeared after prolonged aging resulting in an increase in conductivity.…”

Section: Electrical Conductivity Responsementioning

confidence: 98%

“…The anomalous conductivity response in Al-Li-Cu alloys has also been reported. [4][5][6][7] Thompson et al 6 attributed the decrease in conductivity to the high resistivity of the T 1 phase. Buck et al 5 investigated 2090 Al-Li-Cu alloy and reported the abnormal conductivity behaviour after aging at 200uC while lower aging temperatures did not show such behaviour.…”

Section: Electrical Conductivity Variations During Agingmentioning

confidence: 99%

“…There have been previous reports regarding the decrease in conductivity in Al-Li alloys. [4][5][6][7] These reports indicate that this decrease is either due to the inherent high resistivity of the T 1 phase 6 or due to the presence of strain fields around T 1 because these can then also act as electron scattering centres. 4,5,7 The contribution of GP zones to the decrease in conductivity in the silver bearing alloy was negligible because no decrease in conductivity was observed after 15 h at 150uC, whereas the microstructure displayed a widespread precipitation of GP zones as shown in Fig.…”

Section: Electrical Conductivity Responsementioning

confidence: 99%

See 1 more Smart Citation

Effect of silver on precipitation response of Al–Li–Cu–Mg alloys

Khan¹,

Robinson²

2008

Materials Science and Technology

View full text Add to dashboard Cite

The precipitation response of silver bearing and silver free Al-Li-Cu-Mg alloys has been monitored using hardness and electrical conductivity measurements. The silver bearing alloy displayed enhanced age hardening with an anomalous decrease in conductivity. Transmission electron microscopy was used to investigate the evolution of microstructure in these alloys. The presence of small amounts of silver promoted the formation of GP zones and Al 2 Cu (h9) precipitates, and greatly enhanced the precipitation of T 1 . The anomalous decrease in conductivity was associated with the precipitation of T 1 phase. The initial age hardening in silver bearing alloy was due to d9, GP zones and h9. Precipitation of T 1 , d9 and small amounts of h9 and S9 were responsible during the later stages of aging. Precipitation of h9 was not observed in the silver free alloy. In the overaged condition, dissolution of d9 was more prominent in the silver free alloy.

show abstract

“…A linear correlation was also found between either eddy current or conductivity and DPH with the exception of samples containing the T1 phase. The occurrence of the T1 phase was verified using TEM (6). Therefore, T1 which is detrimental to fatigue properties (11) can be detected using a combination of eddy current or conductivity and hardness measurements.…”

Section: Hardness Dphmentioning

confidence: 99%

Nondestructive Methods for the Determination of Mechanical Properties of Materials

Brasche

Jiles

Buck

et al. 1990

Review of Progress in Quantitative Nondestructive Evaluation

Self Cite

View full text Add to dashboard Cite

Correlation of mechanical properties with non-destructive evaluation measurements in AlLi alloys

Cited by 7 publications

References 10 publications

Correlation of Strength with Hardness and Electrical Conductivity for Aluminium Alloy 7010

Correlation of Strength with Hardness and Electrical Conductivity for Aluminium Alloy 7010

Effect of silver on precipitation response of Al–Li–Cu–Mg alloys

Nondestructive Methods for the Determination of Mechanical Properties of Materials

Contact Info

Product

Resources

About