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Effect of heat treatment on microstructure and mechanical properties of rolled 2A97 Al-Li alloy plate

Xianfeng Zhang

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Abstract

Microstructure and mechanical properties of the high strength 2A97 Al-Li alloy were studied under different heat treatment.The results show that after heat treatment,the hardness of the rolled 2A97 Al-Li alloy increases greatly.After 520 ℃×80 min(solution)+165 ℃×30 h(aging) treatment,the Brinell hardness can be up to 187 HB,the tensile strength is 510 MPa and the elongation reaches 8%.At the early aging stage,the hardness decreases and regression phenomenon appears;with prolonging aging time,the hardness gradually increases,and reaches to the peak until 30 h.

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What this paper is about

Microstructure and mechanical properties of the high strength 2A97 Al-Li alloy were studied under different heat treatment.The results show that after heat treatment,the hardness of the rolled 2A97 Al-Li alloy increases greatly.After 520 ℃×80 min(solution)+165 ℃×30 h(aging) treatment,the Brinell hardness can be up to 187 HB,the tensile strength is 510 MPa and the elongation reaches 8%.At the early aging stage,the hardness decreases and regression phenomenon appears;with prolonging aging time,the hardness gradually increases,and reaches to the peak until 30 h.

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Available abstract

Microstructure and mechanical properties of the high strength 2A97 Al-Li alloy were studied under different heat treatment.The results show that after heat treatment,the hardness of the rolled 2A97 Al-Li alloy increases greatly.After 520 ℃×80 min(solution)+165 ℃×30 h(aging) treatment,the Brinell hardness can be up to 187 HB,the tensile strength is 510 MPa and the elongation reaches 8%.At the early aging stage,the hardness decreases and regression phenomenon appears;with prolonging aging time,the hardness gradually increases,and reaches to the peak until 30 h.

Key concepts: Brinell scale, Materials science, Microstructure, Alloy, Elongation, Ultimate tensile strength, Metallurgy, Composite material

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Effect of heat treatment on microstructure and mechanical properties of rolled 2A97 Al-Li alloy plate — Research Paper | ScholarLens