acicular ferrite

Study of Welding Thermal Sensitivity on Acicular Ferrite Pipeline Steel

针状铁素体管线钢焊接热敏感性的研究

The typical microstructure ( Q235): the surface layer is tempered sorbite; the transition layer is pearlite and ferrite, and the partial ferrite is acicular; the core is pearlite and ferrite and the grain fineness is 8~ 10 grade.

钢筋典型的金相组织（Q235）表层为回火索氏体，过渡层为珠光体+铁素体且部分铁素体呈针状，心部为珠光体+铁素体，晶粒度8～10级；

The results showed that Ti and Ti compound oxides could promote the formation of acicular ferrite, the low temperature toughness of high heat input welding HAZ significantly improved.

结果表明，Ti及Ti的复合氧化物具有促进晶内针状铁素体形核的能力，大热输入焊接时HAZ的低温韧性显著提高。

The weld metal showed very good toughness at low temperature, and dominant microstructure of acicular ferrite.

结果表明:所研制焊丝的焊缝金属具有优良的低温韧性, 且实现了以得到针状铁素体组织为主的设计目标.

Study on the Acicular Ferrite with Basket-Weave Morphology in Deposited Metal

熔敷金属中筐篮编织状针状铁素体组织研究