铸锭扩径对TC4锻坯成分的均匀性及波动性的影响  

The influence of cast ingot expanding on composition uniformity and volatility of TC4 forging stock

作　　者：孙梦桐 蒲超博 郭金榜 强刚刚 赵晓鹏 SUN Mengtong;PU Chaobo;GUO Jinbang;QIANG Ganggang;ZHAO Xiaopeng(Baoji Titanium Industry Co.,Ltd.,Baoji 721014,China)

机构地区：[1]宝鸡钛业股份有限公司,陕西宝鸡721014

出　　处：《有色金属材料与工程》2023年第4期52-60,共9页Nonferrous Metal Materials and Engineering

基　　金：公司控资助项目(2019-GY-147)。

摘　　要：选择5个批次的TC4扩径铸锭,分别沿锻坯的长度及宽度方向对其主要成分分布的均匀性及波动性进行探究。结果表明:TC4锻坯沿两个方向的主要元素分布基本都居于预期目标中部,但沿长度方向的主要元素分布均匀性不及沿宽度方向的。Fe、Al、O、V 4种元素的均匀性依次递减,其中O的分布存在头部超预期目标上限的情况。利用方差分别计算沿两个方向的主要元素波动比,发现其按照Al、V、Fe、O的顺序递减,且前两者的波动比在同一数量级(10^(-2))并远大于后两者的(10^(-4))。沿宽度方向的主要元素的波动比要略低于沿长度方向的,其中O沿两个方向的波动比最小,稳定性最好。Five batches of expanded TC4 cast ingot were selected to explore the distribution uniformity and volatility of the major components along with the length direction and width direction of forging stock,respectively.The results show that the distribution of the major compositions in TC4 forging stock along with the two directions is basically distributed in the middle of the expected target value,however the distribution uniformity along the width direction is better than that along the length direction.The uniformity of the four elements decreases progressively in the order of Fe,Al,O,V while the distribution of O element in the head of the ingot exceeds the upper limit of the expected target value.The fluctuation ratio of main elements along these two directions were calculated by variance,identifying that the elemental distribution decreased in the order of Al,V,Fe,O,and the fluctuation ratio of the first two is on the order of 10^(-2 )which is larger than that of the latter two(10^(-4)).The fluctuation ratio of the main elements along the width direction is slightly lower than that along the length direction,while the O has the smallest fluctuation ratio and the best stability of elemental distribution.

关 键 词：扩径铸锭 TC4锻坯 成分 均匀性 波动性 

分 类 号：TG146[一般工业技术—材料科学与工程]