00000nam 2200000za 4500 9.840621 CaOODSP 20221107151905 cr ||||||||||| 170728s1968 oncad ob f000 0 eng d CaOODSP eng n-cn--- M38-8/74E-PDF M38-8/74 McQueen, H. J. Hot-working mechanisms [electronic resource] / H.J. McQueen, Physical Metallurgy Division. Ottawa : Queen's Printer, 1968. p. 379-388 : charts, ill. Reprint series ; RS 74 Cover title. "Reprinted from Materials Technology - an Inter-American Approach, American Society of Mechanical Engineers, New York, 1968, pp. 379-388." "Presented at the Inter-American Conference on Materials Technology, San Antonio, Texas, May 1968." Historical publication digitized from print 2017 [by Natural Resources Canada]. Includes bibliographical references. "Before introducing the results of hot-working experiments, the techniques and their limitations are described. Microstructural observations and mechanical measurements are discussed separately. The microstructure of hot-worked single-phase alloys consists of polygonized cells; the degree of polygonization increases with rise in temperature, decrease in strain rate and greater facility of dislocation cross-slip and climb. The mechanism thus appears to be dynamic recovery without recrystallization. Recrystallization in the course of deformation may occur in multi-phase alloys. It is shown that the most suitable empirical expression relating strain rate, temperature and flow stress can be interpreted in terms of a stress-aided, thermally-activated process"--Abstract, p. 379. gccst Metals gccst Processing Canada. Natural Resources Canada. Canada. Department of Energy, Mines and Resources. Canada. Mines Branch. Reprint series - Dept. of Energy, Mines and Resources, Mines Branch ; RS 74 (CaOODSP)9.834843 PDF 6.61 MB https://publications.gc.ca/collections/collection_2017/rncan-nrcan/M38-8/M38-8-74-eng.pdf 300153