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________ is added to aluminum alloys to increase Young’s modulus.

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in Food Packaging Technology by (63.0k points)
________ is added to aluminum alloys to increase Young’s modulus.

(a) Chromium

(b) Magnesium

(c) Boron

(d) Lithium

This question was posed to me in exam.

This intriguing question comes from Metal as Packaging Material topic in chapter Metal Packaging Materials of Food Packaging Technology

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The correct answer is (d) Lithium

To elaborate: Lithium is added to aluminum alloys to increase Young’s modulus. The addition of lithium to aluminum can also increase strength, provide precipitation hardening and decrease density.

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