您的位置：首页 > 论文页面
H2气氛用耐热合金的成分设计及力学性能研究
发表时间：2022-03-31 浏览量：578 下载量：105
| 全部作者： | 鲁凯，宋波，毛璟红 |
| 作者单位： | 北京科技大学冶金与生态工程学院；北京科技大学新材料技术研究院 |
| 摘 要： | Ni-Cr-Al基和Ni-Cr-W基铸造合金，因具有良好的耐高温性能、耐腐蚀性能及高温力学性能，广泛应用于高温、易腐蚀工况中。本文通过热力学计算软件Thermo-Calc研究了Cr、W、Al、C等元素含量变化对合金熔点的影响规律，并设计了两种H2气氛中使用的实验合金（2#、3#）；通过室温、高温拉伸及高温持久试验对合金力学性能进行了测试。研究结果表明，2#实验合金的室温抗拉强度为520 MPa，3#实验合金的室温抗拉强度为517 MPa；2#实验合金的高温（1 100℃）抗拉强度为93.0 MPa，3#实验合金的高温（1 100℃）抗拉强度为82.0 MPa；2#、3#实验合金在1 100℃下，试验应力为17 MPa时的持久断裂时间均大于100 h。实验合金与ZG50Ni45Cr35NbM合金相比，室温及高温力学性能均有较大提高，具有在H2气氛中使用的潜力。 |
| 关 键 词： | 冶金工程技术其他学科；金属材料；耐热合金；成分设计；力学性能 |
| Title： | Composition design and mechanical properties of heat-resistant alloy for H2 atmosphere |
| Author： | LU Kai, SONG Bo, MAO Jinghong |
| Organization： | School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing; Institute for Advanced Materials and Technology, University of Science and Technology Beijing |
| Abstract： | Ni-Cr-Al and Ni-Cr-W foundry alloys are widely used in the high temperature and corrosive conditions due to their excellent high temperature resistance, corrosion resistance and high temperature mechanical properties. In this paper, the influence of the change of Cr, W, Al, C and other elements on the melting point of the alloy was studied by thermodynamic calculation software Thermo-Calc. And, two experimental alloys (2# and 3#) used in H2 atmosphere were designed. The mechanical properties of the alloys, including room temperature tensile test, high temperature tensile test and high temperature stress rupture test, were tested. The room temperature tensile strength of 2# experimental alloy is 520 MPa, the room temperature tensile strength of 3# experimental alloy is 517 MPa. The high temperature (1 100℃) tensile strength of 2# experimental alloy is 93.0 MPa, the high temperature (1 100℃) tensile strength of 3# experimental alloy is 82.0 MPa. The permanent fracture time of the 2# and 3# experimental alloys is greater than 100 h at 1 100℃ and with a test stress of 17 MPa. Compared with ZG50Ni45Cr35NbM alloy, the experimental alloys have greatly improved mechanical properties at room temperature and high temperature, and have the potential to be used in H2 atmosphere. |
| Key words： | other subjects of metallurgical engineering; metallic materials; heat-resistant alloy; composition design; mechanical properties |
| 发表期数： | 2022年3月第1期 |
| 引用格式： | 鲁凯，宋波，毛璟红. H2气氛用耐热合金的成分设计及力学性能研究[J]. 中国科技论文在线精品论文，2022，15（1）：119-125. |
2
评论数 0请您登录
暂无评论
下载全文
多维论文