单词 | martensite |
释义 | martensiten. Metallurgy. A hard, brittle, solid solution of carbon in iron which is the main component of hardened steel, formed from austenite when steel is quenched very rapidly. ΘΚΠ society > occupation and work > materials > derived or manufactured material > metal > steel > [noun] > constituents of steel pearlite1888 martensite1898 sorbite1900 troostite1902 granular pearlite1910 bainite1935 1898 W. Roberts-Austen Introd. Metall. (ed. 4) 147 Martensite is the very hard substance of which hardened steel consists. 1910 Encycl. Brit. XIV. 804/2 On cooling into region 6 or 8 austenite should normally split up into ferrite and cementite, after passing though the successive stages of martensite, troostite and sorbite. 1934 H. O'Neill Hardness of Metals vi. 202 Ordinary quench-hardening practice by continuous rapid cooling to room temperatures will produce martensite. 1965 G. J. Jones Fund. Workshop Technol. iii. 41 The hard martensite phase of quenched carbon steels is intermediate between the solid solution which exists at high temperatures (austenite) and the duplex structure of iron and iron carbide (pearlite) which would result from slow cooling. 1976 J. E. Gordon New Sci. Strong Materials (ed. 2) x. 238 Martensite is yet another variant of the iron–carbon crystal which..is extremely hard. 1991 Acta Metallurgica et Materialia 39 2884/1 The lattice invariant deformation must occur by glissile interfacial dislocation arrays at the martensite. This entry has been updated (OED Third Edition, December 2000; most recently modified version published online March 2022). < n.1898 |
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