Development of grain structure during friction stir welding of pure titanium
Development of grain structure during friction stir welding of pure titanium
复制标题
DOI：
10.1016/j.actamat.2009.06.020
复制
发表时间：
2009-09
期刊：
影响因子：
9.4
通讯作者：
S. Mironov;Y. Sato;H. Kokawa
中科院分区：
文献类型：
--
作者：
S. Mironov;Y. Sato;H. Kokawa
研究了工业纯钛搅拌摩擦焊焊接过程中的组织演变。材料流动接近于简单剪切变形，主要由棱柱体滑移引起。结果表明，晶粒结构的演化是一个复杂的过程，包括几个阶段。远离焊接工具，微观组织的演变被发现是由应变和有限的不连续再结晶的几何效应。在搅拌区，强织构的形成导致织构诱导的晶粒会聚，因此晶粒结构的发展与织构的演变密切相关。
The microstructure evolution during friction stir welding of commercial purity titanium was studied. Material flow was found to be close to the simple-shear deformation and arose mainly from the prism slip. The grain structure evolution was shown to be a complex process including several stages. Far from the welding tool, the microstructural evolution was found to be governed by geometrical effects of strain and limited discontinuous recrystallization. In the stir zone, formation of a strong texture was shown to lead to texture-induced grain convergence, and the grain structure development was thus closely related to the texture evolution.