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The Effect of Heat Treatment on Ti64-1.2Cu Deposits Fabricated by Wire-arc Directed Energy Deposition: Process Optimization, Microstructures, and Mechanical Properties

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This study demonstrates improved mechanical properties in Ti64-1.2Cu deposits after heat treatment, indicating process optimization is beneficial.

Microhardness improved significantly from 346.8 HV to 395.1 HV with optimized heat treatment methods.
Yield strength increased from 934 MPa to 990 MPa, while ultimate tensile strength rose from 991 MPa to 1043 MPa.
The formation of Ti 2 Cu precipitates notably enhanced mechanical properties but contributed to increased brittleness.
Overall, the tensile fracture elongation remained within a desirable range despite a reduction, which is promising for practical applications.

Lin et al. (2025) studied this question.

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View Full Paper

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Authors

This study demonstrates improved mechanical properties in Ti64-1.2Cu deposits after heat treatment, indicating process optimization is beneficial.

Microhardness improved significantly from 346.8 HV to 395.1 HV with optimized heat treatment methods.
Yield strength increased from 934 MPa to 990 MPa, while ultimate tensile strength rose from 991 MPa to 1043 MPa.
The formation of Ti 2 Cu precipitates notably enhanced mechanical properties but contributed to increased brittleness.
Overall, the tensile fracture elongation remained within a desirable range despite a reduction, which is promising for practical applications.

Lin et al. (2025) studied this question.

View Full Paper

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Bookmark