超高强高韧化钢的研究进展和展望
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罗海文,沈国慧
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Progress and Perspective of Ultra-High Strength Steels Having High Toughness
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Haiwen LUO,Guohui SHEN
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| 表9 典型盾构机刀具用钢的化学成分及性能[99] |
| Table 9 Compositions and properties of the shield cutter steels[99] |
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Steel | Composition (mass fraction / %) | Hardness HB | Ak (20 ℃) J |
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| C | Mn | Si | Cr | Ni | Mo | V | Other | Fe |
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| HH301 | 0.4 | 0.65 | 1.0 | 5.32 | - | 1.5 | 1.0 | 0.05Nb+0.11Al | Bal. | 654 | 18 | | Wirth | 0.51 | 0.27 | 0.94 | 4.95 | - | 1.41 | 0.8 | - | Bal. | 595 | 11.1 | | 6422 Steel | 0.39 | 0.69 | 0.21 | 0.82 | 1.46 | 0.26 | 0.006 | 0.21Al+0.18Cu | Bal. | 654 | 1.96 | | DQ Steel | 0.51 | 0.27 | 0.94 | 4.95 | - | 1.41 | 0.8 | - | Bal. | 615 | - | | SL steel | 0.35 | 0.75 | 0.4 | 1.2 | 4.0 | 0.45 | - | 0.05Al | Bal. | 654 | 15 | | H13 | 0.4 | 0.35 | 1.0 | 5.0 | - | 1.5 | 1.0 | - | Bal. | 615 | 11 |
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