troostite

American  

[troo-stahyt] / ˈtru staɪt /

noun

1. a microconstituent of hardened and tempered steel, consisting of a very fine aggregate of ferrite and cementite.

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troostite British  

/ ˈtruːstaɪt /

noun

1. a reddish or greyish mineral that is a variety of willemite in which some of the zinc is replaced by manganese

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Other Word Forms

• troostitic adjective

Etymology

Origin of troostite

1900–05; named after L. J. Troost (died 1911), French chemist; see -ite ¹

Example Sentences

Moderate reheating or annealing changes this structure largely into troostite, which is a partly transformed martensite, possessing much of the hardness of martensite, but with a largely increased toughness and shock resistance.

From The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel by Colvin, Fred H. (Fred Herbert)

Sorbite is softer and tougher than troostite, and is habitually associated with pearlite.

From The Working of Steel Annealing, Heat Treating and Hardening of Carbon and Alloy Steel by Colvin, Fred H. (Fred Herbert)