Martensite formation temperature altered by alloying elements


Source: ASM International

Martensite formation temperature altered by alloying elements

Alloying elements alter the Ms temperature significantly, but do not alter the characteristic that transformation is largely independent of cooling rate. In maraging steels, fully martensitic structures are formed even during very slow cooling of heavy sections from the solution-annealing temperature.

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ATI Development of High Temperature Titanium Alloys for Aerospace Applications

May 20, 2018
Source: ASM International

ATI Development of High Temperature Titanium Alloys for Aerospace Applications

Engineers from Allegheny Technologies, Monroe, N.C., discussed the development of new elevated-temperature titanium alloys in “ATI Development of High Temperature Titanium Alloys for Aerospace Applications,” a presentation at the Aeromat Conference May 8-9 in Orlando.

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One Minute Mentor: Austenite Reversion on Heating

May 14, 2018
Source: ASM International

One Minute Mentor: Austenite Reversion on Heating

Age hardening of martensite, or maraging, depends on the occurrence of a thermal hysteresis of phase transformations, whereby the reversion of martensite to austenite during reheating occurs at a higher temperature range than the temperature range for martensite formation during cooling.

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