论文部分内容阅读
鉴于陆地资源的日益枯竭,海洋将成为矿产、能源和食物资源的主要供应基地,因此海洋开发被列为21世纪研究开发的重点领域之一。而耐海水腐蚀金属材料,特别是高强度耐海水腐蚀不锈钢的开发和应用研究则是海洋开发的技术和物质基础。 海水中某承力耐蚀结构用部件要求σ_b≥980MPa、σ_(0.2)≥880 MPa、δ_5≥10％、ψ≥30％、A_K≥49J/cm~2,E与1Cr17Ni2马氏体不锈钢相当,耐海水点蚀和缝隙腐蚀性能与AISI316相当且要求机加工性能良
In the light of the depletion of terrestrial resources, the oceans will become the major supply base of minerals, energy and food resources. Therefore, marine development is listed as one of the key areas for research and development in the 21st century. The development and application of seawater resistant metal materials, especially high strength seawater resistant stainless steel, are the technical and material basis for marine development. Corrosion resistance of seawater components with a bearing strength requirements σ_b ≥ 980MPa, σ_ (0.2) ≥ 880 MPa, δ_5 ≥ 10%, ψ ≥ 30%, A_K ≥ 49J / cm ~ 2, E and 1Cr17Ni2 martensitic stainless steel, Resistance to seawater pitting and crevice corrosion is comparable to AISI 316 and requires good machinability