Research Article
Hybrid Recentering Energy Dissipative Device for Seismic Protection
Table 1
Comparison of NiTi shape memory alloy with steel and aluminum alloys.
| | Property | NiTi | Steel | Aluminum alloys |
| | Elastic modulus | MPa (austenite)
1.4~2.8 × 104 MPa (martensite) | MPa | (70~73) × 103 MPa | | Yield strength | 200~700 MPa (austenite)
70~140 MPa (martensite) | 250~690 MPa | 230~500 MPa | | Tensile strength | 900 MPa (fully annealed)
2000 MPa (work hardened) | 400~760 MPa | 260~570 MPa | | Recoverable elongation | 8% | 0.125~0.345% | 0.3~0.7% | | Elongation at failure | 25~50% (fully annealed)
5~10% (work hardened) | 17~21% | 11~19% |
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