首页|考虑相含量的TC17钛合金线性摩擦焊中的残余应力

考虑相含量的TC17钛合金线性摩擦焊中的残余应力

扫码查看
原文链接
  • 万方数据
  • 维普
为了获得准确的TC17钛合金线性摩擦焊中的残余应力,建立TC17钛合金弹性常数与相分数之间的数值关系.结合焊接区域的相分数,获得呈梯度分布的弹性常数,并将其引入轮廓法进行计算.结果表明,TC17钛合金的弹性常数与α相分数呈正相关,在宽度约4 mm的焊接区域呈现明显的梯度分布特征;若忽略相分数的梯度分布,计算残余应力时相对误差可达36.06％;修正后的残余应力呈双峰分布,在热影响区边缘处达到峰值,约为442 MPa.这说明考虑相分数的梯度分布是必要的.
Residual stresses in linear friction welding of TC17 titanium alloy considering phase fraction
To obtain accurate residual stresses in linear friction welding of TC17 alloy,a numerical relationship between the elastic constants and phase fraction of TC17 alloy was established.The elastic constants with gradient distribution were obtained by combining the phase fraction and introduced into the contour method.The results show that the elastic constants of TC17 alloy are positively correlated with α phase fraction and present a significant gradient distribution in the welding area with a width of about 4 mm.The relative error in calculating the welding residual stresses can be up to 36.06％if the gradient distribution of phase fraction is ignored.The corrected residual stresses in the welding area exhibit a bimodal distribution,with a peak stress of～442 MPa located at the edge of the heat-affected zone.The results demonstrate the necessity of considering the phase fraction with gradient distribution.

linear friction weldingTC17 titanium alloyresidual stressesphase fractiongradient distribution

何鹏、吴运新、张涛、陈送义、张晨

展开 >

中南大学轻合金研究院,长沙 410083

中南大学极端服役性能精准制造国家重点实验室,长沙 410083

线性摩擦焊 TC17钛合金 残余应力 相分数 梯度分布

National Natural Science Foundation of ChinaFundamental Research Funds for the Central Universities of Central South University,China

51975596CX20220285

2024

10.1016/S1003-6326(23)66390-3

中国有色金属学报(英文版)
中国有色金属学会

中国有色金属学报(英文版)

CSTPCD
影响因子：1.183
ISSN：1003-6326
年,卷(期)：2024.34(1)
  • 34