Microstructure and texture evolution in commercial-purity Zr 702 during cold rolling and annealing

来源 :International Journal of Minerals Metallurgy and Materials | 被引量 : 0次 | 上传用户:minyii
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Microstructure and texture evolution in commercial-purity Zr 702 during cold rolling and annealing was investigated by optical microscopy, transmission electron microscopy, and X-ray diffraction. The results showed that crystallographic slip was the predominant deformation mechanism in the early stage of deformation. Deformation twins started to form when the rolling reduction was larger than 38.9%; both the dislocation density and the number of twins increased with increasing rolling reduction. The initial texture of the Zr 702 plate consisted of the basal fiber component. During cold rolling the strength of the basal fiber first decreased and then increased with increasing rolling reduction. The cold-rolled sheets were fully recrystallized after being annealed at 550°C. The recrystallization temperature and the size of recrystallized grains decreased with increasing rolling reduction. A larger rolling reduction resulted in a higher grain growth rate when the annealing temperature increased from 550°C to 700°C. The recrystallization texture was characterized by a major basal fiber and a minor {01 1 3}<2 1 1 0> component. The strength of the recrystallization texture increased with increasing rolling reduction. Microstructure and texture evolution in commercial-purity Zr 702 during cold rolling and annealing was investigated by optical microscopy, transmission electron microscopy, and X-ray diffraction. The results showed that crystallographic slip was the predominant deformation mechanism in the early stage of deformation. Deformation twins started to form when the rolling reduction was larger than 38.9%; both the dislocation density and the number of twins increased with increasing rolling reduction. The initial texture of the Zr 702 plate consisted of the basal fiber component. During cold rolling the strength of the basal fiber first decreased and then increased with increasing rolling reduction. The cold-rolled sheets were fully recrystallized after being annealed at 550 ° C. The recrystallization temperature and the size of recrystallized grains decreased with increasing rolling reduction. A larger rolling reduction resulted in a higher grain growth rate when the annealing temperature in creased from 550 ° C to 700 ° C. The recrystallization texture was characterized by a major basal fiber and a minor {01 1 3} <2 1 1 0> component. The strength of the recrystallization texture increased with increasing rolling reduction.
其他文献
The high-temperature performance of iron ore fines is an important factor in optimizing ore blending in sintering. However, the application of linear regression
The arc characteristics of submerged arc welding(SAW) with stainless steel wire were studied by using Analysator Hannover(AH). The tests were carried out under
Uniaxial tension tests and hole-expansion tests were carried out to determine the influence of silicon on the microstructures, me-chanical properties, and stret
In a typical process, C-Mn steel was annealed at 800°C for 180 s, and then cooled rapidly to obtain the ferrite-martensite micro-structure. After pre-straining
Zeolite NaA was successfully prepared from nickel laterite residue for the first time via a fusion–hydrothermal procedure. The structure and morphology of the
生态文明建设是党在十八大报告中提出的一个重要命题,是全面建成小康社会的新要求之一.在经济全球化快速发展的今天,生态文明建设面临着十分严峻的挑战,因此生态文明建设具有
Monolayer and bilayer coatings of TiAlN, AlCrN, and AlCrN/TiAlN were deposited onto tungsten carbide inserts using the plasma enhanced physical vapor deposition
水汽吸收分布于整个中红外波段,它的存在干扰红外光谱的定量分析。文章介绍了一种从傅里叶变换红外光谱仪的测量数据中扣除水汽干扰信号的新方法。该方法首先通过气象参数测
A method of synthesizing Ni-based catalysts supported onα-Al2O3-based foams was developed. The foams were impregnated with aqueous solutions of metal chlorides