一种高难熔元素镍基高温合金的焊丝成分优化及接头力学性能
TG442; K465镍基高温合金因出色的高温性能在多个领域得到了广泛应用,但由于其难熔元素含量高,焊接性存在问题,为了解决这一问题,针对K465合金设计了 3种不同成分的焊丝,主要通过调整γ'形成元素Al,Ti和固溶强化元素Co的含量.结果表明,调整焊丝成分能影响K465合金的焊接性,特别是通过降低Al,Ti的含量可以减少低熔点共晶相的析出,而增加Co的含量能提高合金的热稳定性并降低裂纹敏感性.在3种焊丝中,高Co,低Al+Ti焊丝的焊接性最佳,焊接后的接头质量高,室温下抗拉强度为822 MPa达到母材性能的84％,并且接头的断后伸长率接近于母材....
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| Published in | 焊接学报 Vol. 45; no. 9; pp. 50 - 61 |
|---|---|
| Main Authors | , , , , , |
| Format | Journal Article |
| Language | Chinese |
| Published |
中国科学院金属研究所,师昌绪先进材料创新中心,沈阳,110016
01.09.2024
中国科学技术大学,材料科学与工程学院,沈阳,110016%空装驻辽阳地区军事代表室,沈阳,110016%中国科学院金属研究所,师昌绪先进材料创新中心,沈阳,110016%沈阳工业大学,材料科学与工程学院,沈阳,110870 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 0253-360X |
| DOI | 10.12073/j.hjxb.20230928001 |
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| Abstract | TG442; K465镍基高温合金因出色的高温性能在多个领域得到了广泛应用,但由于其难熔元素含量高,焊接性存在问题,为了解决这一问题,针对K465合金设计了 3种不同成分的焊丝,主要通过调整γ'形成元素Al,Ti和固溶强化元素Co的含量.结果表明,调整焊丝成分能影响K465合金的焊接性,特别是通过降低Al,Ti的含量可以减少低熔点共晶相的析出,而增加Co的含量能提高合金的热稳定性并降低裂纹敏感性.在3种焊丝中,高Co,低Al+Ti焊丝的焊接性最佳,焊接后的接头质量高,室温下抗拉强度为822 MPa达到母材性能的84％,并且接头的断后伸长率接近于母材. |
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| AbstractList | TG442; K465镍基高温合金因出色的高温性能在多个领域得到了广泛应用,但由于其难熔元素含量高,焊接性存在问题,为了解决这一问题,针对K465合金设计了 3种不同成分的焊丝,主要通过调整γ'形成元素Al,Ti和固溶强化元素Co的含量.结果表明,调整焊丝成分能影响K465合金的焊接性,特别是通过降低Al,Ti的含量可以减少低熔点共晶相的析出,而增加Co的含量能提高合金的热稳定性并降低裂纹敏感性.在3种焊丝中,高Co,低Al+Ti焊丝的焊接性最佳,焊接后的接头质量高,室温下抗拉强度为822 MPa达到母材性能的84％,并且接头的断后伸长率接近于母材. |
| Abstract_FL | K465 nickel-based superalloy has been widely used in many fields due to its excellent high temperature performance.However,due to its high content of refractory elements,weldability is problematic.In order to solve this problem,three kinds of welding wires with different compositions were designed for K465 alloy,mainly by adjusting the contents of γ'-forming elements Al,Ti and solution strengthening element Co.The results show that adjusting the composition of the welding wire can effectively affect the weldability of K465 alloy.In particular,the precipitation of low melting point eutectic phases can be reduced by lowering the content of Al and Ti,while increasing the content of Co improves the thermal stability of the alloy and reduces the susceptibility to cracking.Among the three kinds of welding wires,the one with high Co and low Al+Ti showed the high weldability.The welded joints were of high quality,with a tensile strength of 822 MPa at room temperature,which is 84％of the performance of the base metal,and the elongation of the joints was close to that of the base metal. |
| Author | 储清泉 侯星宇 孙元 赵志鹏 刘士伟 王诗洋 |
| AuthorAffiliation | 中国科学院金属研究所,师昌绪先进材料创新中心,沈阳,110016;中国科学技术大学,材料科学与工程学院,沈阳,110016%空装驻辽阳地区军事代表室,沈阳,110016%中国科学院金属研究所,师昌绪先进材料创新中心,沈阳,110016%沈阳工业大学,材料科学与工程学院,沈阳,110870 |
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| Author_FL | ZHAO Zhipeng CHU Qingquan LIU Shiwei WANG Shiyang SUN Yuan HOU Xingyu |
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| DocumentTitle_FL | Composition optimization of welding wire and mechanical properties of joints of nickel-based superalloy containing high refractory elements |
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| Keywords | 力学性能 显微组织 microstructure 焊接性 焊丝成分 weldability welding wire composition K465合金 K465 superalloy mechanical properties |
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| PublicationTitle | 焊接学报 |
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| Publisher | 中国科学院金属研究所,师昌绪先进材料创新中心,沈阳,110016 中国科学技术大学,材料科学与工程学院,沈阳,110016%空装驻辽阳地区军事代表室,沈阳,110016%中国科学院金属研究所,师昌绪先进材料创新中心,沈阳,110016%沈阳工业大学,材料科学与工程学院,沈阳,110870 |
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| Snippet | TG442; K465镍基高温合金因出色的高温性能在多个领域得到了广泛应用,但由于其难熔元素含量高,焊接性存在问题,为了解决这一问题,针对K465合金设计了 3种不同成分的焊丝,主... |
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| Title | 一种高难熔元素镍基高温合金的焊丝成分优化及接头力学性能 |
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