环境条件对10CrNi3MoV钢抗裂性的影响

通过对590MPa级船用高强度结构钢(10CrNi3MoV钢)和配套焊条的抗裂性试验以及焊条熔敷金属扩散氢逸出特性测定，研究了环境条件(温度和湿度)对焊条熔敷金属扩散氢含量、扩散氢逸出特性以及抗裂性的影响。研究结果表明，在不同环境条件下，焊条熔敷金属扩散氢含量和扩散氢逸出特性的不同是造成抗裂性具有不同表现的主要原因。后期阶段慢速逸出扩散氢量HDs是影响多道焊抗裂性的关键因素，并对其产生的原因进行了分析。

Influence of environment condition on cracking-resistance of 10CrNi3MoV steel

In this paper,the influence of environment condition (temperature and relatively humidity) on diffusible hydrogen content of electrode deposited metal,H_D escape characteristic and the cracking-resistance are studied by cracking test and H_D escape characteristic of (590 MPa) high strength ship structure steel (10CrNi3MoV steel ) and special electrode.The research demonstrated that different H_D content and H_D escape characteristic depending on environment condition can produce different result during various cracking test.It is discussed that the slow diffusible hydrogen escaping of later period(H_(D_s)) is the key factor to effect multi-pass weld cracking test.