摘要
通过不同批次的试制件和对比件材料的组织检查、验证性试验、性能测试和影响因素分析,研究了1Cr15Co14Mo5VN材料的塑韧性性能及其热处理工艺敏感性。研究表明:1Cr15Co14Mo5VN材料抗裂纹扩展的能力不强,导致用该材料制造的产品对表面缺陷和应力比较敏感;通过加入Ni和Nb、采用双真空冶炼和提高固溶温度等途径有望提高1Cr15Co14Mo5VN的断裂韧度和塑韧性。
Based on the results of metallographic examinations as well as relevant verifying tests, performance tests and influencing factor analysis of the materials sampled from different batches of the products, this paper reveals the characteristics of the 1Cr15Co14Mo5VN ductile-toughness, which is very sensitive to the heat treatment process. The study also shows the sensitivity of the products manufactured with 1Cr15Co14Mo5VN to surface defects and stress concentration due to the lower crack resistance of the material. Therefore, it is suggested to improve the product design and the material. Analysis indicates that the fracture toughness and the ductile-toughness of 1Cr15Co14Mo5VN can be increased by measures such as adding Ni and Nb, using double vacuum smelting, and increasing the solution temperature.
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2017年第6期137-141,共5页
Nuclear Power Engineering
