预热对690 MPa级HSLA钢对接接头力学性能的影响
Effect of Preheating on Microstructure and Mechanical Properties of Butt Joint of 690 MPa Grade HSLA Steel
预热对690 MPa级HSLA钢对接接头力学性能的影响 |
| 汤忖江, 安同邦, 彭云, 马成勇, 林纯丞, 石照夏, 秦哲 |
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Effect of Preheating on Microstructure and Mechanical Properties of Butt Joint of 690 MPa Grade HSLA Steel |
| TANG Cunjiang, AN Tongbang, PENG Yun, MA Chengyong, LIN Chuncheng, SHI Zhaoxia, QIN Zhe |
| 图8 不预热和低预热对接接头冲击断口中心的SEM像 |
| Fig.8 SEM images of the center of impact fracture of non-preheating and low preheating temperature butt joints (regions 1, 3—dimple regions, regions 2, 4—quasi-cleavage fracture regions, regions 5, 6—fracture elements, regions 7, 8—comparison regions) (a, b) impact fractures of weld center (solid circles indicate observation regions, dashed lines indicate dimple and quasi-cleavage fracture regions), (c, d) weld metals in center (dashed lines indicate fracture elements), (e, f) fusion zones, (g, h) coarse grain regions in HAZ (solid rectangles indicate comparison of dimple size) |
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