研究了Mn含量对Cr Mo耐热钢气保焊丝用盘条的组织及力学性能的影响。结果表明:盘条的组织均由铁素体和硬质第二相组成;随着Mn含量由0.59%升高到1.16%,铁素体晶粒尺寸减小,第二相由MA组元向贝氏体和MA组元的混合组织转变,第二相体积含量由17.8%增加到33.5%,导致盘条的抗拉强度和宏观硬度增加,延伸率降低。硅、锰元素在第二相中未发生偏聚,碳元素在第二相中的偏聚程度随第二相组织比例的增加而降低,最高碳含量由1.0%降至0.75%,导致第二相的微观硬度值下降。
AWS A5.9-93 GB4241-84 YB/T5092-1996 GB/T4241-2006 YB/T5092-2005 ER308 H0Cr21Ni10 H0Cr21Ni10 H08Cr21Ni10Si H08Cr21Ni10Si ER308L H00Cr21Ni10 H00Cr21Ni10 H03Cr21Ni10Si H03Cr21Ni10Si ER309 H1Cr24Ni13 H1Cr24Ni13 H12Cr24Ni13Si H12Cr24Ni13Si ER309L ---- ---- H03Cr24Ni13Si H03Cr24Ni13Si ER310 H1Cr26Ni21 H1Cr26Ni21 H12Cr26Ni21Si H12Cr26Ni21Si ER316 H0Cr19Ni12Mo2 H0Cr19Ni12Mo2 H08Cr19Ni12Mo2Si H08Cr19Ni12Mo