GB/T6394-2017在钛合金晶粒度评定中的应用  

Application of GB/T 6394—2017 in Grain Size Determination of Titanium Alloy

作　　者：史文 张雷 李笑 SHI Wen;ZHANG Lei;LI Xiao(Baoti Group Experimental Center, Baoji 721014,China)

机构地区：[1]宝钛集团实验中心

出　　处：《理化检验（物理分册）》2019年第8期542-546,共5页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：对各类钛合金的晶粒度评定做了定义。应用GB/T 6394-2017中的比较法和截点法对α,β类钛合金材料的晶粒度进行了评定。对α-β两相合金中出现的等轴组织、双态组织、网篮组织、魏氏组织、非等轴组织及特殊组织的晶粒度评定方法做了应用研究。结果表明:α,β类单相钛合金、各相含量明确的α-β两相钛合金及再结晶热处理后的超细晶组织,均可应用GB/T 6394-2017中比较法和截点法来进行晶粒度评定。The determination of grain size for various titanium alloys was defined.The grain size ofα,βtitanium alloys was determined by the comparison method and intercept procedure in GB/T 6394-2017.The methods of grain size determination for equiaxed microstructure, duplex microstructure, basketweave microstructure,widmanstatten,non-equiaxed microstructure and ultrafine grain microstructure inα-βtwo-phase titanium alloys were studied.The results show that comparison method and intercept procedure in GB/T 6394-2017 can be used to determine the grain size ofαandβsingle-phase titanium alloy,α-βtwo-phase titanium alloy with definite phase content and ultrafine grain microstructure after recrystallization heat treatment.

关 键 词：钛合金 晶粒度 初生Α相 非等轴晶粒 超细晶粒 

分 类 号：TG115.21[金属学及工艺—物理冶金]