Comparison of static recrystallization behavior in hot rolled Mg–3Al–1Zn and Mg–3Zn–0.5Ca sheets

Effect of Static Recrystallization on Texture Development and Formability in Mg–Al–Zn and Mg–Li–Zn Alloys

“…As previously reported, 17) XRD measurement shows that AZ alloys have higher c/a ratio (AZ31: 1.6245, AZ61: 1.6252) than pure Mg (1.6238), while LZ alloys have lower c/a ratio (LZ11: 1.6223, LZ21: 1.6206) due to larger decrease in c parameter than in a parameter. In general, it is known that non basal slip such prismatic as a-slip and prismatic a + c slip as well as compression twin are activated with decreasing c/a ratio.…”

“…Only the basal pole intensity increased from 9.6 to 14 in AZ31 and from 12 to 18 in AZ61, as previously reported. 17) However, pole figures obtained from LZ alloys show different features: 1) double basal pole intensity maxima appeared along the rolling direction (RD), ³«10°inclined from the normal direction (ND); 2) after annealing treatment, double basal pole intensity maxima disappeared, and single intensity maximum centered at the ND appeared. The maximum basal pole intensity decreased after annealing treatment, i.e., from 9.5 to 6.4 in LZ11 and from 7.9 to 5.1 in LZ21; and 3) the maximum basal pole intensity in as-rolled and annealed state decreased with increasing Li content, and its distribution becomes slightly wider.…”

Calcium and zirconium as texture modifiers during rolling and annealing of magnesium–zinc alloys

“…Corresponding to this, it was found that Ca additions to MgZn alloys lead to textures that have strong similarities with those of rare earth elements containing Mg-Zn sheets [5,22]. In these works a strong contribution of different twin types and subsequent static recrystallisation are emphasised as texture determining mechanisms.…”

“…Numerous works have shown that a texture variation can help to overcome this issue [1][2][3][4][5]. The typical strong alignment of basal planes in conventional magnesium sheets limits the strain accommodation during deformation as well as the resulting work hardening ability [6].…”

Processing Effects on the Formability of Magnesium Alloy Sheets

“…In this regard, limits have been seen for a long time, which were based in the limited deformation behavior of magnesium alloys, and often associated with the hexagonal close-packed lattice structure of this metal and its alloys. Many works on the microstructure-property relationship [3][4][5][6] have concluded that the formation of strong textures, especially with a preferential alignment of basal planes in the sheet plane, is an important reason for limited formability. This limitation is primarily due to the limited strain accommodation, especially by basal slip [7], e.g., such textures are formed during the rolling process.…”