marquenchingn.
/ˈmɑːkwɛn(t)ʃɪŋ/, U.S. /ˈmɑrˌkwɛn(t)ʃɪŋ/ Metallurgy.
A process similar to martempering but with the constant-temperature stage kept too short to allow isothermal transformation. Sometimes also: = martempering n.
ΘΚΠ
society > occupation and work > industry > working with specific materials > working with metal > [noun] > hardening, tempering, or annealing > other types of hardening
case-hardening1666
precipitation hardening1926
martempering1943
shot-peening1944
marquenching1947
1947 Iron Age 3 July 52/1 Martempering consists of quenching from the austenitizing temperature to the Ms temperature..and holding this temperature until transformation from the austenite is complete... Marquenching is the term which is usually applied to interrupted quench only, without involving isothermal transformation.
1956 Jrnl. Iron & Steel Inst. 183 332/1 The author discusses the difference between marquenching and martempering and explains the trend of Bain's curve in case hardened steels for the differing carbon contents encountered.
1974 Industr. Heating July 33 Marquenching instead of oil quenching resulted in the smallest growth..and the narrowest growth spread.
1985 L. C. Love Princ. Metall. vii. 216 (caption) Schematic diagram of rapidly quenching austenite to an elevated temperature and allowing the entire cross section to transform at the same time. This is called marquenching.
This entry has been updated (OED Third Edition, December 2000; most recently modified version published online March 2022).
<
n.1947