Accession Number : AD0634031

Title :   ANISOTROPY AND ITS RELATIONSHIP TO DEEP DRAWING OF A 5% CR TOOL STEEL (H11).

Descriptive Note : Technical rept.,

Corporate Author : ARMY MATERIALS RESEARCH AGENCY WATERTOWN MASS MATERIALS TECHNOLOGY DIV

Personal Author(s) : Colton,Robert M. ; Colgate,James D.

Report Date : APR 1966

Pagination or Media Count : 26

Abstract : The drawability of a spheroidize-annealed hot-rolled H11 tool steel is shown to be most critically dependent upon hot-rolling finishing temperature, spheroidize-annealing treatment, and subsequent deep-drawing temperature. These processing variables influence drawability as indicated by their effect upon strain ratio (R sub theta = d epsilon sub w/ d epsilon sub t) measured at an angle delta to the rolling direction, the average normal anisotropy (R'), the degree of planar anisotropy (delta R) and susceptibility to 'earing', and the brittle-ductile transition temperature. Drawability is shown to increase as R' increases. However, R', delta R, and R(sub 45) are shown to be linearly related. As drawability increases (R' > 1), susceptibility to earing also increases (/delta R/>0). Values of R', delta R, R sub theta, yield strength, ductility, and brittle-ductile transition temperatures for optimum drawability are presented. (Author)

Descriptors :   (*TOOL STEEL, *DRAWING(FORMING)), (*ANISOTROPY, DRAWING(FORMING)), ROLLING(METALLURGY), TEMPERATURE, ANNEALING, DUCTILITY, TRANSITION TEMPERATURE, BRITTLENESS, STRAIN(MECHANICS).

Subject Categories : Metallurgy and Metallography
      Fabrication Metallurgy

Distribution Statement : APPROVED FOR PUBLIC RELEASE