Transient creep characteristics of Tin Base Alloy
a, ∗ Physics Department, Faculty of Science, New Valley, Assiut University, 72511, El-Kharge, Egypt.
b. physics Department, Faculty of Science, Zagazig University, Zagazig, Egypt.
Citation: M.Y. Salema, A.Z. Mohamed. “Transient creep characteristics of Tin Base Alloy”, American Research
Journal of Physics, vol 4, no. 1, 2018, pp. 1-12
Abstract
Abstract: Transient creep experiments were inspected under several used stresses extended from 10 to 19.5
MPa for three ternary eutectic (Sn-3.5Ag- xIn) alloys, where x takes the values (x= 0.5, 1 and 1.5 In ). All tests
at temperatures, ranging from 303 to 393 K. The transient creep is classified by εtr = βtn, where εtr and t are
the transient creep strain and time. The exponent n was found to have values extended from 0.646 to 1.59 for
Sn-3.5Ag-0.5In, ranging from 0.82 to 1.64 for the second alloy Sn-3.5Ag-1In, and finally it is ranging from 0.94
to 1.74 for Sn-3.5Ag-1.5In. The value of β was found to have values ranging between -14.38 to -7.2, -13.85 to -7,
and -13.55 to -6.8 for the three alloys; the activation enthalpy shows that the operating mechanism controlling
the tin process may be the grain bounding diffusion. Also, X-ray diffraction examination displays the permanence
of both β-Sn rich phase and the intermetallic compound Ag3Sn and very little particles or residue from the
intermetallic composition γ-In Sn4.
