00000nam 2200000za 4500 9.841163 CaOODSP 20221107152024 cr ||||||||||| 170808s1965 oncd ob f000 0 eng d CaOODSP eng eng fre n-cn--- M34-20/72E-PDF McDonald, R. D. The status of the hydrogen problem in steel [electronic resource] / by R.D. McDonald. [Ottawa : Queen's Printer, 1965] iii, 12 p. : charts Technical bulletin ; TB 72 Caption title. Imperfect copy: cover wanting. Digitized edition from print [produced by Natural Resources Canada]. Includes bibliographical references (p. 8-9). “Hydrogen problems in steel are described, with particular emphasis on the problem of embrittlement of ultra-high strength steels as manifested by delayed failure. Ways are described in which hydrogen enters steel and is recognized by tests. Theories that have been developed over the years of research are related and explained briefly in order of sequence up to the most recent proposals advanced. These theories serve to explain many of the observations concerning hydrogen, although gaps in the knowledge still exist. Alleviation of embrittlement still depends heavily upon diffusion treatments at baking temperatures, although many ways of preventing entry of hydrogen are being tried with moderate success"--Abstract, p. i. Includes abstract in French. gccst Steel Canada. Natural Resources Canada. Canada. Mines Branch. Technical bulletin (Canada. Dept. of Energy, Mines and Resources. Mines Branch) TB 72 (CaOODSP)9.834857 PDF 220 KB https://publications.gc.ca/collections/collection_2017/rncan-nrcan/M34-20/M34-20-72-eng.pdf 299959