... diameters magnification). The carbon, at least when in small quantities, is not in the form of segregated carbide. The characteristics are similar to those of martensite,aconstituent of hardenedcarbon-steels. Thissimi- larity is more remarkable since the steels of thisgroupare relatively self-hardening. ( 3...

... in water from a full redheat. Mr. Osmond and ProfR. oberts- Austen therefore stated t,hat the adamantine nature of hardened steelwasduemainly to p iron;thehardness being, however, augmented by the presence of the dissolved atoms of free carbon which acted as a frictional resistance. How or why the atoms...

... for the hardening of iron-carbon alloys; and had explained the effect of annealing and of mechanicalwork upon metals. He had shown that reduction of grainwasbroughtaboutbyalternation of annealingand mechanical stresses. A clear insight into the nature and origin of Dr. Sorby s pearly constituent had been given...

...SIR B BAKER; T ANDREWS; J E STEAD; R AUSTEN; R A HADFIELD; J HEAD; W ANDERSON; B BLOUNT; A B W KENNEDY; J O ARNOLD; T WRIGHTSON © Thomas Telford and ICE 1896 PHYSICAL PROPERTIES IRON STEEL CRACKS CARBON ANNEALING HARDENED MAGNETISM WELDING TENSILE COMPRESSION TESTS METALS...